Inventor
Gunter Siegemund
Inventor
Hofheim, DE
Overview
Patents· 54 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds62%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry6%
C07BGeneral methods of organic chemistry6%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds6%
C07DHeterocyclic compounds5%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds5%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium3%
C12NMicroorganisms or enzymes1%
C25BElectrolytic or electrophoretic processes for the production of compounds or non-metals1%
PatentTitleYear
6,288,293'Process for the preparation of 1,1,1,2-tetrafluoroethane'20015,969,199'Process for the addition of HF to halogenated alkenes'19995,847,245'Process for the addition of HF to halogenated alkenes'19985,739,070'Process for regenerating a fluorination catalyst'19985,728,884'Process for the work-up of complex amine hydrofluroides'19985,684,193'Process for the preparation of perfluoropropionyl fluoride'19975,672,748'Process for preparing trifluoroacetyl fluoride'19975,659,078'Process for the preparation of trichloroacetyl chloride'19975,534,634'Process for preparing trifluoroethyl sulfur compounds from thiolates and 1-chloro-2,2,2-trifluoroethane'19965,471,002'Process for preparing trifluoromethylanilines'19955,399,795'Process for the preparation of 2-H-heptafluoropropane'19955,319,131'.alpha.-fluoroacrylic acid esters and polymers thereof'19945,288,908'Process for the preparation of fluorine containing monomers'19945,274,126'Partially fluorinated tetracarboxylic acid and the dianhydride thereof, a process for their preparation and their use'19935,266,668'Substituted phenyl .alpha.-fluoroacrylates'19935,254,771'Process for the preparation of 1,1,1-trifluoro-2-2-dichloroethane under elevated pressure'19935,202,469'Partially fluorinated dicarboxylic acid and the acid chloride thereof, and a process for their preparation'19935,198,925'.alpha.-fluoroacrylic acid esters and polymers thereof'19935,157,172'Process for the preparation of 1,1,1-Trifluoro-2-chloroethane'19925,153,334'Partially fluorinated tetracarboxylic acid and the dianhydride thereof'19925,118,874'Partially fluorinated biphenyls, processes for their preparation and their use'19925,110,983'Hexafluoroisopropyl-containing monomers, process for their preparation and their use'19925,087,748'Process for the continuous oligomerization of hexafluoropropene oxide'19925,081,315'Fluoro-containing compounds based on 4,4\'-bis[2-(4-hydroxyphenyl) hexafluoroisopropyl]diphenyl ether, processes for their preparation and their use'19925,028,728'Process for the preparation of reaction products of 2,2-bis-(4-hydroxphenyl)-hexafluoropropane and new derivatives of this type'19915,017,719'Esters of arylbisperfluoroalkylcarbinols, and a process for the preparation of these compounds'19915,004,797'Partly fluorinated carboxylic acids and derivatives thereof, processes for their preparation and their use'19914,992,593'Partially fluorinated diphenyl ethers, processes for their preparation and their use'19914,978,790'4,4\'-bis[2-(4-hydroxy-amino-phenyl)hexafluoroisopropyl]-diphenylethers and their use'19904,973,749'Process for the dimerization of hexafluoropropene oxide'19904,968,845'Process for the preparation of halogen-containing aromatic compounds'19904,968,848'Process of the prparation of perfluoroalkyl compounds, and pentafluoroethyltrimethylsilane'19904,966,987'Fluoro-containing 1-arylalkoxytris(dialkylamino)phosphonium salt, a process for their preparation and their use'19904,924,014'Process for the preparation of halogen-containing aromatic compounds'19904,922,019'Derivatives of 2,2-bis-(3-aminophenyl)hexafluoropropane and process for the preparation of 2,2-bis-(3,4-diaminophenyl)hexafluoropropane'19904,874,557'Process for the preparation of perfluorinated carbonyl fluorides'19894,835,318'Process for the preparation of aryl perfluoroalkyl ketones'19894,778,568'Process for separating isomer mixtures of 1,3- and 1,4- bis-(2-hydroxyhexafluoro-prop-2-yl)-benzene'19884,774,370'Process for preparing 2,2-bis-(3-nitrophenyl)-hexafluoropropane, and 2,2-bis-(4-carboxy-3-nitrophenyl)-hexafluoropropane occurring as an intermediate'19884,727,142'Process for the preparation of imidates'19884,623,491'Process for the preparation of halogenated aliphatic carboxylic acid fluorides'19864,603,017'Fluorosulfonate containing polyfluorocarbonyl compounds'19864,603,111'Preparation of biocatalysts in bead form'19864,578,369'Process for the regeneration of fluorination catalysts'19864,547,483'Catalysts for fluorination and/or dismutation reactions on halogenated hydrocarbons, and a process for their preparation'19854,532,366'Perfluorinated vinyl ethers containing a secondary hydrogen atom, polymers formed therefrom and a process for the preparation of the monomers'19854,524,031'Fluorosulfatoperfluorocarbonyl compounds'19854,469,641'Omega-fluorosulfato-perfluoro-(2-methyl-alkan-3-ones)'19844,454,072'Process for the preparation of .omega.-fluorosulfatoperfluoroalkanoic acid derivatives'19844,400,546'Process for the preparation of hexafluoroacetone and direct use of the solution obtained by the process'19834,343,742'Process for the manufacture of 2,3-perfluoro-1,4-dioxanes as well as some special representatives of compounds of this class'19824,343,749'Process for the preparation of monohydroperfluoroalkane-sulfonic acid halides and some specific representatives of this class of compound'19824,287,124'Process for the preparation of 4,5-perfluoro-1,3-dioxalanes'19814,088,701'1,2,2,2-Tetrafluoroethyl-fluoromethyl ether and process for preparing it'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978–1997Patents assigned to HOECHST AG (46)· patent assignee history
1978–2001Based in Hofheim, DE· patent location history
1986Patents assigned to HOECHST ATKIENGESELLSCHAFT (1)· patent assignee history
1997–2001Patents assigned to SOLVAY (6)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HOECHST AG | 46 | 1978–1997 |
| SOLVAY | 6 | 1997–2001 |
| HOECHST ATKIENGESELLSCHAFT | 1 | 1986 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hofheim, DE | 54 | 1978–2001 |