Inventor

Richard Buchecker

Inventor

Zurich, CH

Overview

1988–2009

Patent span

Chemistry

Primary field (CPC C)

Patents· 60 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 elsewhere40%

C07DHeterocyclic compounds23%

C07CAcyclic or carbocyclic compounds19%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein7%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds2%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium1%

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds1%

G02BOptical elements, systems or apparatus1%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light1%

Y10TTechnical subjects covered by former us classification1%

PatentTitleYear

7,514,514'Photoactive copolymer'2009 7,419,620'Dichroic mixtures'2008 7,034,098'Photoactive polymer'2006 6,831,148'Photoactive polyimides, polyamide acids or esters with side chain photocrosslinkable groups'2004 6,733,690'Laterally substituted curable liquid crystals'2004 6,676,851'Laterally substituted curable liquid crystals'2004 6,632,909'Photocrosslinkable polymers'2003 6,607,677'Optically active compounds'2003 6,548,127'Liquid-crystalline photocrosslinkable mixture'2003 6,340,506'Photocrosslinkable polyimides'2002 6,277,502'Photocrosslinkable silane derivatives'2001 6,225,479'Optically active bis-dioxane derivatives'2001 6,143,208'Optical element and compounds used in its manufacture'2000 6,120,859'Polymerisable, optically active dioxolane diesters'2000 5,965,761'Photoactive silane derivatives for liquid crystals'1999 5,888,423'Fluorobenzyl ether derivatives'1999 5,852,212'Process for preparation of optically active .alpha.-bromo and .alpha.-chlorocarboxylic compounds'1998 5,851,425'Imidazothiazoles'1998 5,800,734'1-fluorocyclohexene-difluorophenyl derivatives'1998 5,681,504'Optically active tolanes'1997 5,667,721'Liquid crystalline di-1,3-dioxane derivatives'1997 5,662,829'Fluorocyclohexene-dioxane derivatives'1997 5,582,767'Fluorosubstituted tolane derivatives'1996 5,518,653'Optically active methyl dioxanes'1996 5,498,367'Optically active tolanes'1996 5,486,310'Liquid crystalline mixtures having a chiral tilted smectic phase'1996 5,478,497'Tetracyclic compounds and liquid crystalline mixtures containing them'1995 5,454,974'Halobenzene liquid crystals'1995 5,447,658'Tricyclic fluorobenzonitrile derivatives'1995 5,413,734'4-cyano-3-fluorophenyl esters'1995 5,399,689'Chlorophenylalkoxyalkyl compounds'1995 5,399,292'Fluoro-substituted phenyl-cyclohexylacetylenes'1995 5,372,746'Fluoro-substituted tolane compounds and liquid crystalline mixtures containing same'1994 5,360,577'Oxaxoline derivatives'1994 5,356,563'Liquid crystalline mixtures having a chiral tilted smectic phase'1994 5,335,303'Quasi-phased matched optical waveguide frequency conversion element having a ferroelectric liquid crystalline material exhibiting a periodic structure'1994 5,328,637'Alkinyl-derivatives and their use in liquid crystalline mixtures'1994 5,326,497'Nitrogen heterocycles and liquid crystalline mixtures containing them'1994 5,327,273'Bistable ferroelectric liquid crystal display cell'1994 5,309,265'Short pitch LC layer with a temperature independent .lambda..sub.0 and containing a nematic LC doped with plural chiral additives having the same twist sense'1994 5,302,317'Halobenzene liquid crystals'1994 5,292,452'Alkenylcyclohexane liquid crystalline compounds'1994 5,284,956'Liquid crystalline mixtures containing 2-(2-fluorophenyl) pyridines'1994 5,264,149'Liquid crystal compounds having a terminal 1-alkynyl residue'1993 5,244,597'Liquid crystalline mixtures having a chiral tilted smectic phase'1993 5,242,619'Liquid crystalline mixtures having a chiral tilted smectic phase'1993 5,230,826'Halobenzene liquid crystals'1993 5,185,098'Liquid crystalline mixtures containing 3,4-difluorophenyl-substituted bicyclohexyls'1993 5,174,921'Bicyclohexyl derivatives'1992 5,171,472'Phenylcyclohexyldioxane derivatives having an ether bond for electro-optical displays'1992 5,171,473'Liquid crystal compounds having a terminal 1-alkynyl residue'1992 5,102,578'Liquid crystalline mixtures and method of making same'1992 5,100,577'Ferroelectric liquid crystal mixtures and compounds as well as electro-optical devices employing same'1992 5,082,589'Liquid crystalline esters'1992 5,013,476'Liquid crystal compounds and indicating device employing same'1991 5,013,477'Alkenylbicyclohexane liquid crystals'1991 4,925,278'Liquid crystalline esters'1990 4,898,455'Pyridine liquid crystalline compounds'1990 4,830,470'Liquid crystalline esters'1989 4,770,503'Liquid crystalline compounds'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–1996Patents assigned to HOFFMANN LA ROCHE (38)· patent assignee history

1988–1990Based in Basel, CH· patent location history

1989–2009Based in Zurich, CH· patent location history

1992Patents assigned to DAINIPPON INK & CHEMICALS (1)· patent assignee history

1993Based in Zu, CH· patent location history

1994–1996Patents assigned to NIOPIC MOSCOW RES & PROD ASS (2)· patent assignee history

1995Patents assigned to DAINIPPPON INK AND CHEMICALS I (1)· patent assignee history

1997–2009Patents assigned to ROLIC AG (21)· patent assignee history

2003–2004Based in Zrich, CH· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HOFFMANN LA ROCHE	38	1988–1996
ROLIC AG	21	1997–2009
NIOPIC MOSCOW RES & PROD ASS	2	1994–1996
DAINIPPON INK & CHEMICALS	1	1992
DAINIPPPON INK AND CHEMICALS I	1	1995

Locations

Location	Patents	Span
Zurich, CH	53	1989–2009
Zrich, CH	4	2003–2004
Basel, CH	2	1988–1990
Zu, CH	1	1993