Inventor

Yo Iizuka

Inventor

Iwaki, JP

Overview

1976–1993

Patent span

Chemistry

Primary field (CPC C)

Patents· 43 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 bonds27%

C08LCompositions of macromolecular compounds18%

B29CShaping or joining of plastics8%

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. inserts8%

C08JWorking-up7%

Y10TTechnical subjects covered by former us classification6%

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients5%

D01FChemical features in the manufacture of artificial filaments, threads, fibres, bristles or ribbons5%

H01BCables4%

H05KPrinted circuits4%

PatentTitleYear

5,268,451'Process for the preparation of cross-linked polyarylene sulfide'1993 5,200,500'Process for the preparation of cross-linked polyarylene sulfide'1993 5,179,194'Process for production of polyarylenesulfides'1993 5,134,206'Polymer alloy of polyarylene thioether and a process for producing the same'1992 5,085,819'Heat-resistant resin compositions, and heat-resistant molded or formed articles and production process thereof'1992 5,021,523'Polymer alloy of polyarylene thioether and a process for producing the same'1991 4,985,512'High-lubricity film'1991 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 4,897,238'Stretched poly(arylene thioether-ketone) films and production process thereof'1990 4,895,925'Melt-stable poly(arylene thioether-ketone) 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 4,895,893'Heat-resistant resin compositions, and heat-resistant molded or formed articles and production process thereof'1990 4,895,924'Poly(arylene thioether-ketone) fibers and production process thereof'1990 4,895,691'Poly(arylene thioether-ketone) fibers 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 4,863,669'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 4,816,335'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 4,801,416'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 4,777,228'Biaxially oriented paraphenylene sulfide block copolymer film and process for producing the same'1988 4,774,298'Process for producing biaxially oriented paraphenylene sulfide block copolymer film'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 4,745,167'Polyarylene sulfide preparation in titanium reaction vessel with two distinct temperature ranges'1988 4,659,789'Phenylene sulfide resin compositions'1987 4,645,826'Process for production of high to ultra-high molecular weight linear polyarylenesulfides'1987 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 4,337,324'Vinyl chloride resin composition'1982 4,277,573'Vinyl chloride resin and alkyl methacrylate resin processing aid composition'1981 4,268,636'Vinyl chloride resin composition with processing aid'1981 4,206,292'Vinyl chloride resin composition containing polymeric processing aid'1980 4,021,509'Production of impact-resistant, thermoplastic resin compositions'1977 3,956,424'Photo-degradable resin composition'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1993Patents assigned to KUREHA CHEMICAL IND CO LTD (41)· patent assignee history

1976–1993Based in Iwaki, JP· patent location history

1987–1989Based in Fukushima, JP· patent location history

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

1990Patents assigned to POLYPLASTICS CO (1)· patent assignee history

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

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
KUREHA CHEMICAL IND CO LTD	41	1976–1993
KUREHA KABAKU KOGYO K K	1	1992
KUREHA KAGAWA KOGYO KABUSHIKI	1	1988
POLYPLASTICS CO	1	1990

Locations

Location	Patents	Span
Iwaki, JP	40	1976–1993
Fukushima, JP	3	1987–1989