Inventor

Zenya Shiiki

Inventor

Iwaki, JP

Overview

1976–2004

Patent span

Chemistry

Primary field (CPC C)

Patents· 73 as inventor

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

C08Gprimary

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds23%

C08LCompositions of macromolecular compounds16%

B29CShaping or joining of plastics9%

C08JWorking-up9%

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients8%

B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts7%

D01FChemical features in the manufacture of artificial filaments, threads, fibres, bristles or ribbons6%

Y10TTechnical subjects covered by former us classification6%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%

C01BNon-metallic elements2%

PatentTitleYear

6,673,403'Gas-barrier, multi-layer hollow container'2004 6,245,437'Gas-barrier composite film'2001 6,183,679'Production process for injection-molded product of polyglycolic acid'2001 6,159,416'Stretch blow molded container and production process thereof'2000 6,046,251'Injection-molded product of polyglycolic acid and production process thereof'2000 6,001,439'Stretch blow molded container and production process thereof'1999 5,908,917'Polyglycolic acid sheet and production process thereof'1999 5,853,639'Oriented polyglycolic acid film and production process thereof'1998 5,830,991'Preparation process and purification process of dimeric cyclic ester of hydroxycarboxylic acid'1998 5,688,586'Poly(ethylene oxalate), product formed of molded therefrom and production process of poly(ethylene oxalate)'1997 5,484,876'Production process for aromatic thioether ketone/thioether sulfone copolymers'1996 5,408,014'Aromatic thioether ketone/thioether sulfone copolymer products'1995 5,369,191'Aromatic thioether ketone/thioether sulfone copolymer and production process thereof'1994 5,312,894'Granular high-melt-stable poly(arylene thioether-ketone) and production process thereof'1994 5,200,501'Easily-slidable polyarylene thioether film and process for producing the same'1993 5,153,278'Poly(arylene thioether) block copolymer and production process thereof'1992 5,153,279'Poly(arylene thioether) block copolymer and production process thereof'1992 5,153,264'Poly(arylene thioether) block copolymer and production process thereof'1992 5,137,992'Process for producing an easily-slidable polyarylene thioether film'1992 5,120,808'Poly(arylene thioether) block copolymer and production process thereof'1992 5,110,681'Melt-stable poly(arylene thioether-ketone) prepregs and molded or formed products thereof'1992 5,085,819'Heat-resistant resin compositions, and heat-resistant molded or formed articles and production process thereof'1992 5,006,591'Polyarylene thioether composition and molded product thereof'1991 4,980,114'Stretched poly(arylene thioether) block copolymer films and production process thereof'1990 4,975,479'Heat-resistant thermoplastic resin composition'1990 4,962,143'Poly(arylene thioether) block copolymer fibers and production process thereof'1990 4,960,555'Poly (arylene thioether) block copolymer fibers and production process thereof'1990 4,960,806'Stretched poly(arylene thioether) block copolymer films and production process thereof'1990 4,956,499'Polyarylene thioether composition for molding'1990 4,931,516'Process for producing polyarylene sulfide in titanium vessel with addition of water'1990 4,910,086'Resin coated metal body'1990 4,897,238'Stretched poly(arylene thioether-ketone) films and production process thereof'1990 4,895,691'Poly(arylene thioether-ketone) fibers and production process thereof'1990 4,895,924'Poly(arylene thioether-ketone) fibers and production process thereof'1990 4,895,925'Melt-stable poly(arylene thioether-ketone) and production process thereof'1990 4,895,893'Heat-resistant resin compositions, and heat-resistant molded or formed articles and production process thereof'1990 4,895,892'Melt-stable poly(arylene thioether-ketone) compositions'1990 4,895,912'Stretched poly(arylene thioether-ketone) films and production process thereof'1990 4,886,871'Melt-stable poly(arylene thioetherketone) and production process thereof'1989 4,873,283'Molded or formed poly(arylene thioether-ketone) articles'1989 4,868,240'Polyarylene thioether of high crystallizing rate and a process for producing the same'1989 4,863,669'Process for forming polyarylenethioether stretched blow-molded vessel'1989 4,826,906'Poly(arylene thioether-ketone) compositions improved in both melt stability and crystallinity'1989 4,820,759'Polyarylene thiother composition'1989 4,816,335'High-quality polyarylene-thioether fibers and method for production thereof'1989 4,814,430'Process for producing poly(arylene sulfide) of reduced alkali metal content'1989 4,812,539'Polyarylene sulfide preparation in titanium reaction vessel with two distinct temperature ranges'1989 4,810,566'Highly crystallized molded polyarylene thioether and process for producing it'1989 4,801,416'Transparent and little colored polyarylenethioether primary melt molding, preparation and utilization thereof'1989 4,795,671'Para-phenylene sulfide block copolymers, process for the production of the same and use thereof'1989 4,794,164'Process for producing a polyarylene sulfide of excellent handling property and a polyarylene sulfide produced by the process thereof'1988 4,785,057'Para-phenylene sulfide block copolymer, process for the production of the same'1988 4,769,426'Process for preparation of polyarylene thioethers having high melt crystallization temperature'1988 4,761,468'Process for preparing polyarylene thioether having thiol/thiolate end group concentration of 10 micro mole/g or less'1988 4,748,205'Thermoplastic resin composition'1988 4,746,698'Method of preventing corrosion of apparatus for melt-processing polyarylene thioethers'1988 4,745,167'Polyarylene sulfide preparation in titanium reaction vessel with two distinct temperature ranges'1988 4,732,935'Thermoplastic resin composition'1988 4,701,495'Thermoplastic resin composition'1987 4,645,826'Process for production of high to ultra-high molecular weight linear polyarylenesulfides'1987 4,636,553'Thermoplastic resin composition'1987 4,613,654'Polyarylenesulfide complexes, processes for production and uses thereof'1986 4,537,953'Process for producing aromatic sulfide polymer with alkaline earth metal oxide dehydrating agent'1985 4,514,558'Process for producing aromatic sulfide polymer with anhydrous amorphous vitreous complex dehalogenation agent'1985 4,495,332'Process for producing aromatic sulfide polymers'1985 4,451,640'Process for producing aromatic sulfide polymer'1984 4,447,578'Thermoplastic resin composition'1984 4,352,910'Vinyl chloride resin composition with multi-stage impact modifier'1982 4,292,285'Method for removing compounds with offensive odor from a gas containing the same'1981 4,273,675'Process for the preparation of spherical carbon particles and spherical activated carbon particles'1981 4,045,368'Process for production of activated carbon spheres'1977 4,009,232'Method for the production of carbon microspheres 1-20 .mu. in diameter'1977 3,953,345'Method for the production of activated carbon spheres containing nitrogen'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–2004Patents assigned to KUREHA CHEMICAL IND CO LTD (68)· patent assignee history

1976–1977Based in Tokyo, JP· patent location history

1981–1996Based in Iwaki, JP· patent location history

1981–2004Based in Narashino, JP· patent location history

1987–1997Based in Fukushima, JP· patent location history

1988Patents assigned to KUREHA KAGAWA KOGYO KABUSHIKI (1)· patent assignee history

1990Patents assigned to KUREHA KAGAKU KOGHO K K (1)· patent assignee history

1992Patents assigned to KUREHA KABAKU KOGYO K K (1)· patent assignee history

1998Patents assigned to KUREHA KAGAKU KAGYO KK (1)· patent assignee history

1998–2001Based in Chiba, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
KUREHA CHEMICAL IND CO LTD	68	1976–2004
KUREHA KABAKU KOGYO K K	1	1992
KUREHA KAGAKU KAGYO KK	1	1998
KUREHA KAGAKU KOGHO K K	1	1990
KUREHA KAGAWA KOGYO KABUSHIKI	1	1988

Locations

Location	Patents	Span
Iwaki, JP	43	1981–1996
Narashino, JP	13	1981–2004
Fukushima, JP	8	1987–1997
Chiba, JP	6	1998–2001
Tokyo, JP	3	1976–1977