Inventor

Seisaku Kumai

Inventor

Yokohama, JP

Overview

1976–2006

Patent span

Chemistry

Primary field (CPC C)

Patents· 41 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C07Cprimary

C07CAcyclic or carbocyclic compounds47%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds13%

C07DHeterocyclic compounds6%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry5%

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds3%

C08JWorking-up3%

D06MTreatment, not provided for elsewhere in class d06, of fibres, threads, yarns, fabrics, feathers or fibrous goods made from such materials3%

Y02PClimate change mitigation technologies in the production or processing of goods3%

Y02WClimate change mitigation technologies related to wastewater treatment or waste management3%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%

PatentTitleYear

7,015,263'Process for recovering fluoropolymers'2006 6,515,102'Process for recovering fluoropolymers'2003 6,283,360'Composition for preventing creeping of a flux for soldering'2001 6,197,989'Fluorinated organosilicon compounds and process for the preparation thereof'2001 5,929,292'Distillation column type production method'1999 5,914,422'Method for producing fluorine-containing silicone compound'1999 5,908,950'Polyether modified fluoroalkylsiloxanes'1999 5,861,524'Oligomeric fluoroalkylsiloxanes as oil spreading agents'1999 5,834,614'Method for producing a fluorine-containing silicone compound'1998 5,834,612'Fluorine-containing organic compound'1998 5,763,709'Method for producing a hydrofluorocarbon'1998 5,728,903'Method for producing flourine-containing silicone compound'1998 5,710,317'Preparation of difluoroacetic acid fluoride and difluoroacetic acid esters'1998 5,663,399'Method for producing fluorine-containing silicone compound'1997 5,648,568'Method for producing a hydrofluorocarbon'1997 5,648,504'Process for producing tetrafluorophthalic anhydride'1997 5,646,222'Polyfluorohydrocarbon group-containing monomers, their polymers and applications of the polymers'1997 5,621,147'Trifluoro-2-(trans-4-substituted cyclohexyl) ethylenes and process for their production'1997 5,618,986'Method for producing a hydrofluorocarbon'1997 5,568,239'Stainproofing oil for a heat fixing roller'1996 5,565,607'Polyfluorohydrocarbon group-containing monomers, their polymers and application of the polymers'1996 5,557,017'Method for producing a hydrofluorocarbon'1996 5,523,476'Processes for producing tetrafluorophthalic anhydride and fluorobenzoic acids'1996 5,349,098'Process for producing chlorofluorobenzenes'1994 5,332,851'Processes for producing 5-fluorobenzoic acids and their intermediates'1994 5,241,111'Processes for producing 5-fluorobenzoic acids and their intermediates'1993 5,208,394'Process for producing chlorofluorobenzenes'1993 5,093,515'Fluorinated benzoyl compounds'1992 5,072,062'Bromination method'1991 5,068,449'Fluorinated benzoyl compounds'1991 5,041,647'Process for producing trifluoroacetic acid and trifluoroacetyl chloride'1991 4,994,610'Process for preparing fluorinated benzoyl compounds'1991 4,985,588'Nucleus-fluorinated aromatic carboxylates and processes for their production'1991 4,440,948'Process for preparing methacrylic acid'1984 4,379,768'Process for producing perfluorosuccinyl fluoride'1983 4,340,750'Process for producing fluorovinyl ether'1982 4,318,867'Process for producing difluoroiodoacetyl fluoride'1982 4,275,226'Process for producing fluorovinyl ether'1981 4,151,200'Process for producing polyfluorodiacyl fluoride'1979 4,089,869'Process for producing perfluorolactone'1978 3,998,877'Process for preparing methacrylic acid'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–2006Patents assigned to ASAHI GLASS CO LTD (38)· patent assignee history

1976–1999Based in Yokohama, JP· patent location history

1983–1991Based in Tokyo, JP· patent location history

1991–2001Based in Fujisawa, JP· patent location history

1992Patents assigned to KATAYAMA SEIYAKUSHO CO LTD (1)· patent assignee history

1993–2003Patents assigned to SEIMI CHEM KK (4)· patent assignee history

1998–1999Patents assigned to OSI SPECIALTIES INC (3)· patent assignee history

1999Based in Chigasaki, JP· patent location history

2001Patents assigned to CROMPTON CORP (1)· patent assignee history

2001–2006Based in Kanagawa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ASAHI GLASS CO LTD	38	1976–2006
SEIMI CHEM KK	4	1993–2003
OSI SPECIALTIES INC	3	1998–1999
CROMPTON CORP	1	2001
KATAYAMA SEIYAKUSHO CO LTD	1	1992

Locations

Location	Patents	Span
Yokohama, JP	21	1976–1999
Fujisawa, JP	14	1991–2001
Kanagawa, JP	3	2001–2006
Tokyo, JP	2	1983–1991
Chigasaki, JP	1	1999