Inventor
Volker Reiffenrath
Inventor
Rossdorf, DE
Overview
Patents· 211 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C09Kprimary
C09KMaterials for miscellaneous applications, not provided for elsewhere59%
C07CAcyclic or carbocyclic compounds20%
C07DHeterocyclic compounds13%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein4%
H01QAntennas, i.e. radio aerials2%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium1%
C07BGeneral methods of organic chemistry0%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients0%
F25DRefrigerators0%
Y10TTechnical subjects covered by former us classification0%
PatentTitleYear
10,738,243Liquid-crystalline medium and liquid-crystal display202010,711,195Liquid-crystalline medium202010,711,197Liquid-crystalline medium and high-frequency components comprising same202010,472,569Liquid-crystalline medium201910,450,509Liquid crystal medium and liquid display201910,442,990Mesogenic compounds, liquid crystal media and components for high frequency technology201910,364,392Liquid-crystalline medium and liquid-crystal display comprising the same201910,099,975Alkynyl-tolanes, liquid-crystal mixtures containing them and components for high-frequency technology201810,081,765Liquid-crystalline medium201810,017,695Fluorinated dibenzofuran and dibenzothiophene derivatives20189,951,274Liquid-crystalline medium20189,777,217'Compounds having a C—C triple bond'20179,765,259'Mesogenic compounds, liquid-crystalline media and components for high-frequency technology'20179,752,076'Compounds for a liquid-crystalline medium, and the use thereof for high-frequency components'20179,752,077'Liquid-crystalline media, components for high-frequency technology, and mesogenic compounds'20179,745,512'Liquid-crystalline medium'20179,611,428'Liquid-crystalline medium and electro-optical liquid-crystal display'20179,605,204'Liquid crystal medium and high frequency components comprising same'20179,593,279'Liquid-crystalline medium and high-frequency components comprising same'20179,540,566'Devices for high-frequency technology, liquid-crystalline media and compounds'20179,523,037'Liquid-crystalline media, components for high-frequency technology, and mesogenic compounds'20169,512,102'4,6-difluorodibenzothiophene derivatives'20169,493,703'Liquid crystal medium and high-frequency components comprising same'20169,376,622'Liquid-crystalline medium'20169,296,948'Mesogenic compounds, liquid-crystalline media and components for high-frequency technology'20169,193,905'Devices for high-frequency technology, liquid-crystalline media and compounds'20159,175,219'Compounds for a liquid crystalline medium and use thereof for high frequency components'20159,169,438'Compounds of liquid crystalline medium and use thereof for high-frequency components'20158,999,198'Compounds for a liquid-crystalline medium, and the use thereof for high-frequency components'20158,877,092'Liquid-crystalline medium'20148,747,695'Compounds for a liquid-crystalline medium, and use for high-frequency components'20148,673,178'Liquid crystal medium'20148,585,922'Liquid-crystalline medium'20138,574,456'Liquid-crystalline medium and liquid crystal display'20138,557,142'Compounds for a liquid crystal medium and high-frequency components containing said liquid crystal medium'20138,486,298'Liquid-crystalline medium'20138,394,292'Liquid-crystalline medium and liquid-crystal display'20138,268,191'Liquid-crystalline medium and liquid-crystal display'20128,168,081'Liquid-crystalline medium'20128,012,370'Liquid-crystalline medium and liquid-crystal display'20117,923,079'Liquid-crystalline medium and liquid-crystal display comprising 1,2-difluoroethene compounds'20117,807,236'Liquid-crystalline medium'20107,790,929'Chiral phenol derivative, liquid crystal medium containing said chiral phenol derivative'20107,785,677'Liquid-crystalline medium'20107,785,678'Liquid-crystalline mixtures and liquid-crystal displays'20107,744,968'Cyclobutane and spiro[3.3]heptane compounds'20107,740,918'Liquid crystalline medium and liquid crystal display'20107,658,978'Liquid crystalline medium'20107,651,742'Liquid-crystalline medium and liquid-crystal display comprising 1,2-difluoroethene compounds'20107,563,491'Liquid crystalline medium and liquid crystal display'20097,462,297'Chiral dopants having a laterally alkylated phenyl structural element'20087,442,419'Liquid-crystalline medium and liquid-crystal display'20087,438,956'Liquid-crystalline medium and liquid-crystal display'20087,419,705'Liquid-crystalline medium'20087,390,538'Liquid-crystal medium containing monofluoroterphenyl compounds'20087,316,830'Liquid-crystalline phenol esters'20087,220,464'Nematic liquid-crystal mixture, and displays containing same'20077,201,951'Liquid-crystalline medium'20077,179,511'Liquid-crystalline phenol esters'20077,166,337'Liquid-crystal composition, methods of adjusting the resistance, and substituted phenols'20077,153,550'Liquid crystalline medium and liquid crystal display'20067,122,228'Compound having negative Δε'20067,081,280'Liquid-crystalline medium'20067,033,654'Liquid-crystalline medium'20067,033,652'Liquid-crystalline medium'20067,029,731'Liquid-crystalline medium'20067,026,020'Liquid-crystalline medium'20066,964,794'Liquid-crystalline medium'20056,962,733'Liquid-crystalline medium'20056,953,610'Liquid-crystalline medium'20056,951,669'Liquid-crystalline medium'20056,929,833'Liquid-crystalline medium'20056,890,607'Liquid-crystalline medium'20056,827,990'Liquid-crystalline medium'20046,827,989'Liquid crystalline medium'20046,821,582'Liquid-crystalline mixtures'20046,808,764'Liquid-crystalline medium having a high birefringence and improved UV stability'20046,793,983'Liquid crystal medium'20046,790,489'Liquid-crystalline medium'20046,761,939'Liquid crystalline medium and liquid crystal display'20046,761,938'Electro-optical liquid-crystal display and liquid-crystal medium'20046,740,369'Liquid-crystalline medium'20046,689,291'Liquid-crystalline medium'20046,685,996'Liquid-crystalline medium'20046,677,003'Liquid-crystalline medium'20046,669,998'Liquid-crystalline medium'20036,649,088'Nematic liquid crystal mixtures and a matrix liquid crystal display'20036,641,871'Liquid-crystal compound, liquid-crystal medium comprising same, and electro-optical liquid-crystal display'20036,632,484'Dialkyne compounds'20036,596,350'Liquid-crystalline medium'20036,569,503'STN liquid-crystal display'20036,569,505'Liquid crystal compounds, liquid crystal medium and liquid crystal display'20036,565,933'Liquid-crystalline medium'20036,444,279'Liquid crystal propene or propenyl nitrile derivatives'20026,444,278'2,6-di-tert-butylphenols'20026,419,999'Liquid-crystalline medium and liquid-crystal display containing same'20026,420,584'Process for the preparation of ortho-substituted arylmetal compounds and their reaction with electrophilic reagents'20026,399,162'Liquid-crystalline medium'20026,326,066'1,4-disubstituted 2,6-difluorobenzene compounds, and a liquid-crystalline medium'20016,303,194'Acetylene derivatives, and liquid-crystalline medium'20016,207,835'Process for the preparation of arylmetal compounds and their reaction with electrophilic reagents'20016,203,724'Crosslinked cyclohexane derivatives, and liquid-crystalline medium'20016,200,654'1,4-disubstituted 2,6-difluorobenzene compounds, and a liquid-crystalline medium'20016,183,821'STN liquid-crystal display'20016,180,026'Nematic liquid crystal mixtures and a matrix liquid crystal display'20016,177,594'4-(4-oxocyclohexyl) benzamides as intermediate products for medicaments'20016,171,665'Liquid-crystalline medium'20016,159,393'Benzene derivatives and liquid-crystalline medium'20006,146,719'Liquid-crystalline compounds, and liquid-crystalline medium'20006,146,720'Electro-optical liquid-crystal display'20006,139,925'Liquid-crystal composition, method of adjusting the resistance, and substituted phenols'20006,126,857'Bisalkenylbicyclohexanes, and liquid-crystalline medium'20006,083,423'Nematic liquid crystal mixtures and a matrix liquid crystal display'20006,080,451'STN liquid crystal display'20006,066,268'Liquid-crystalline medium'20006,063,456'STN liquid-crystal display'20006,056,894'TN and STN liquid-crystal display'20006,056,893'Dopants'20006,054,193'Supertwist liquid-crystal display'20006,045,878'Electro-optical liquid-crystal display'20006,036,884'Liquid-crystalline medium'20006,027,665'Electro-optical liquid-crystal display'20006,028,655'TN and STN liquid-crystal display'20006,017,469'Supertwist liquid-crystal display'20005,997,767'STN liquid-crystal display'19995,993,691'Electro-optical liquid crystal display'19995,976,404'Supertwist liquid-crystal display'19995,976,407'Electro-optical liquid-crystal display'19995,958,290'Electrooptical liquid crystal system'19995,942,648'Naphthalene derivatives'19995,932,138'Benzene derivatives, and liquid-crystalline medium'19995,837,162'Liquid-crystalline compounds'19985,811,029'Benzene derivatives, and a liquid-crystalline medium'19985,744,058'Dienes and liquid-crystalline media'19985,725,796'Liquid-crystal display'19985,718,840'Benzene derivatives, and liquid-crystalline medium'19985,714,087'Supertwist liquid-crystal display'19985,702,640'High-multiplexed supertwist liquid-crystal display'19975,641,429'Fluorobenzene derivatives and liquid-crystalline medium'19975,626,793'Liquid-crystalline compounds'19975,616,284'Liquid-crystalline medium'19975,578,241'Liquid crystal display'19965,565,140'Halogenated benzene derivatives, and a liquid-crystalline medium'19965,560,863'2-Fluorocyclohexene derivatives'19965,536,442'Fluorinated liquid crystal compounds and liquid crystal medium containing same'19965,520,846'Liquid-crystalline medium'19965,516,454'Supertwist liquid crystal display'19965,496,499'Biphenylethanes and liquid-crystalline phase'19965,494,606'1,3-dioxane derivatives, and liquid-crystalline medium'19965,487,845'Fluorobenzene derivatives and liquid-crystalline medium'19965,480,581'Liquid-crystalline medium'19965,454,975'Cyanophenylpyri (MI)dine derivatives and liquid-crystalline medium'19955,403,512'Vinyl compounds, and a liquid-crystalline medium'19955,389,290'Nitrogen-containing heterocycles'19955,389,291'3,6-disubstituted 2-halopyridines'19955,389,295'Benzene derivatives, and a liquid crystal medium'19955,387,689'Chiral valerolactone derivatives'19955,384,065'Matrix liquid-crystal display'19955,374,374'Supertwist liquid-crystal display'19945,356,560'2-fluoroperfluoroalkylcyclohexene derivatives'19945,350,535'Liquid-crystalline medium'19945,344,587'Electrooptical liquid-crystal system'19945,330,679'Nematic liquid-crystal composition for active matrix application'19945,328,642'Liquid-crystalline medium'19945,318,721'Nematic liquid-crystalline phases'19945,308,541'Halogenated benzene derivatives, and a liquid-crystalline medium'19945,308,543'Nematic liquid-crystal composition for active matrix application'19945,308,537'Mesogenic compounds'19945,308,542'4,4\'-disubstituted 2\',3-difluorobisphenyls and a liquid-crystalline medium'19945,286,411'Liquid-crystalline medium'19945,279,762'Smectic liquid crystal phases'19945,279,764'Dihalogenobenzene derivatives'19945,273,680'Fluorinated oligophenyls and their use in liquid crystal materials'19935,271,865'Liquid-crystalline mixture of low viscosity'19935,262,556'Process for the reaction of halogenated aromatics with electrophiles'19935,254,698'Phenyldioxanes'19935,248,447'2,3-difluorohydroquinone derivatives'19935,242,618'Di- and trifluorotolans'19935,236,620'2,3-difluorobenzene derivatives'19935,232,624'Chiral 1,2-difluorobenzene derivatives'19935,230,827'Derivatives of 2,3-difluorobenzoic acid'19935,213,710'Benzene derivatives and a liquid-crystalline medium'19935,211,878'Difluorobenzonitrile derivatives'19935,209,868'Trifluoromethylcyclohexane derivatives'19935,209,866'Heterocyclic 1,2-difluorobenzene derivatives'19935,205,962'Pyridine derivatives'19935,204,476'Fluorophenylpyridines'19935,204,019'2,3-difluorobiphenyls'19935,204,017'Difluorobenzonitriles and liquid-crystalline medium'19935,204,477'Pyridine derivatives in liquid crystalline medium useful for electrooptical display elements'19935,198,149'Smectic liquid-crystal medium'19935,196,141'5-oxy-2-phenylpyridines, and a liquid-crystalline medium'19935,178,790'Supertwist liquid crystal display'19935,164,114'Ethyne derivatives'19925,151,213'Fluorine-containing aromatic compounds'19925,139,698'Liquid crystal medium having a low temperature-dependence of the D/P window'19925,122,297'Tetracyclic benzene derivatives and liquid-crystalline media'19925,093,026'Biphenylylethanes'19925,089,168'Nitrogen-containing heterocycles'19925,087,764'Process for the preparation of 2,3-difluorobenzenes'19925,084,204'Naphthylacetylenes'19925,068,053'Ethyne derivatives as a component of liquid crystal phases'19915,064,566'Smectic liquid crystal phases'19915,055,223'Aryl-sulfur pentafluorides'19914,925,590'Derivatives of 4-cyano-2,3-difluorophenol'19904,897,216'2,3-difluorophenol derivatives'19904,886,620'Smectic liquid-crystalline phases'19894,871,472'Esters in ferroelectric mixtures'19894,871,469'Nematic liquid-crystalline phases'19894,867,904'Bicyclooctane derivatives'19894,820,839'Nitrogen-containing heterocyclic esters'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989–2020Patents assigned to MERCK PATENT GMBH (203)· patent assignee history
1989–2005Based in Darmstadt, DE· patent location history
1990–2020Based in Rossdorf, DE· patent location history
1997Based in D'dorf, DE· patent location history
2003Based in Robdorf, DE· patent location history
2008–2013Based in Roβdorf, DE· patent location history
2012–2019Patents assigned to REIFFENRATH VOLKER (23)· patent assignee history
2013–2019Patents assigned to JASPER CHRISTIAN (13)· patent assignee history
2013–2019Patents assigned to MANABE ATSUTAKA (13)· patent assignee history
2013–2019Patents assigned to PAULUTH DETLEF (13)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MERCK PATENT GMBH | 203 | 1989–2020 |
| REIFFENRATH VOLKERself | 23 | 2012–2019 |
| JASPER CHRISTIAN | 13 | 2013–2019 |
| MANABE ATSUTAKA | 13 | 2013–2019 |
| PAULUTH DETLEF | 13 | 2013–2019 |
Locations
| Location | Patents | Span |
|---|---|---|
| Rossdorf, DE | 184 | 1990–2020 |
| Darmstadt, DE | 15 | 1989–2005 |
| Roβdorf, DE | 8 | 2008–2013 |
| Robdorf, DE | 1 | 2003 |
| D'dorf, DE | 1 | 1997 |