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Inventor

Tadashi Okawa

Inventor
Chiba, JP

Overview

97→
Patents
1976–2021
Patent span
Chemistry
Primary field (CPC C)

Patents· 97 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 bonds30%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium17%
C08LCompositions of macromolecular compounds11%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients5%
A61KPreparations for medical, dental or toiletry purposes4%
A61QSpecific use of cosmetics or similar toiletry preparations4%
C09DCoating compositions, e.g. paints, varnishes or lacquers4%
C09KMaterials for miscellaneous applications, not provided for elsewhere3%
Y10TTechnical subjects covered by former us classification3%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds2%
PatentTitleYear
10,940,105Resin-linear organopolysiloxane block copolymer, use of same, and method for producing same202110,874,604Cosmetic composition or external composition, and cosmetic raw material composition202010,604,658Organic silicon compound, surface treatment agent containing same, resin composition containing same, and gel or cured product of same20209,598,576'Curable silicone composition, cured product thereof, and optical semiconductor device'20179,486,652'Gel composition and cosmetic'20169,018,332'Polyorganosiloxane containing methacryloxy group or acryloxy group and method for producing the same'20158,925,626'Composition for forming film'20158,808,869'Treatment agent for use in lignocellulose material'20148,686,174'Partially hydrocarbon group-blocked (poly)glycerol-modified polysiloxane, method for producing the same, and cosmetic composition containing the same'20148,513,174'Cleanser'20138,461,258'Method of producing amino acid-modified organopolysiloxane emulsions'20138,147,854'Cosmetics comprising a modified organopolysiloxane'20128,071,709'Composite material comprising flourine-containing rubber, fuel-impermeable sealing material comprising same, and process for preparing composite material'20118,034,891'Polyether-modified organopolysiloxane, diorganopolysiloxane-polyether block copolymer, their production methods, and cosmetic preparation'20118,013,094'Gelling agents and gelatinous compositions'20117,989,581'Polyether from ring-opening of glycidyl ether with (C2-C5 alkylene oxide) monohydric alcohol'20117,622,539'Organopolysiloxane and silicone composition'20097,335,784'Method for distillation of organosilicon compounds that contain acryloxy or methacryloxy groups'20087,329,706'Heat-conductive silicone composition'20087,199,205'Organopolysiloxane-modified polysaccharide and process for producing the same'20077,030,259'Process for the preparation of silicone compounds'20066,455,640'Method for producing basic amino acid-modified organopolysiloxane'20026,448,360'Process for the production of cyclic siloxane'20026,417,309'Curable organosiloxane composition'20026,407,275'Method for synthesizing 1,3-dihydroxytetramethyldisiloxane'20026,380,301'Thermally conductive silicone rubber composition'20026,376,601'High-refractive-index optical silicone oil and high-refractive-index optical silicone oil mixture'20026,376,635'Oligosiloxane and method of preparing same'20026,369,185'Curable organopolysiloxane composition, cured products formed therefrom and unified articles'20026,306,992'Carbosiloxane dendrimer and dendrimer-containing organic polymers'20016,307,081'Hyperbranched polymers and methods for the preparation, cure, and stabilization thereof'20016,265,516'Anti-staining additive and room-temperature-curable polyorganosiloxane composition'20016,252,029'Hydroxyphenyl group-containing organosilicon compound, and method for manufacturing same'20016,197,988'Method for purifying 3-methacryloxypropyldimethylhalosilanes or 3-methacryloxypropyl methyldihalosilanes'20016,172,252'Pheno-functional organosilicon compounds and method for the preparation'20016,156,437'Curable compositions using siloxane grafted vinyl polymers'20006,140,525'Hyperbranched polymers and methods for the preparation thereof'20006,136,521'Polycarbonate, and molding and electrophotographic photoreceptor prepared therefrom'20006,133,394'Method for the preparation of organofunctional organopentasiloxane, organic resin modifier and organic resins'20006,072,013'Silicone-grafted vinyl polymer and method for the preparation thereof'20006,063,887'1-acyloxy-organotetrasiloxane and production method for the preparation of the same'20006,013,822'Method for the preparation of high-purity methacryloxypropyldimethylchlorosilane'20005,939,507'Method for manufacturing siloxane compounds'19995,914,418'Polymerization inhibitor for acrylic-functional silanes'19995,912,371'Method for preparing fatty acid chlorides'19995,874,602'Process for the preparation of radically polymerizable group-functional silanol compounds'19995,856,545'Method for preparation of organopentasiloxane'19995,847,178'Method for purifying 3-methacryloxypropyldimethylhalosilanes and 3-methacryloxypropylmethyldihalosilanes'19985,811,565'Method for purifying 3-methacryloxypropyldimethylhalosilanes and 3-methacryloxypropylmethyldihalosilanes'19985,750,587'Radiation curable silicone release coating compositions'19985,726,271'Hydroxyphenyl-containing polyorganosiloxanes'19985,723,643'Method for the preparation of acryloxy- or methacryloxy-functional organosilicon compounds'19985,686,641'Method for the preparation of organopentasiloxanes'19975,658,965'Radiation curable silicone release coating composition'19975,633,335'Copolymer of silicone macromonomer and alicyclic epoxy monomer'19975,614,640'Epoxy functional siloxanes'19975,567,790'Method for the preparation of diphenylsiloxane-dimethylsiloxane copolymers'19965,567,789'Method for the preparation of organopolysiloxanes'19965,565,540'Method for the preparation of SiOH-containing organosiloxane oligomer'19965,493,039'Method for the preparation of methacryloxypropyldimethylchlorosilane'19965,486,635'Method for preparing diorganopolysiloxane having a functional group at only one end of the molecular chain'19965,432,218'Room-temperature-curable organopolysiloxane composition'19955,403,881'Room-temperature-curable composition'19955,399,649'Method for the preparation of diorganopolysiloxanes'19955,395,955'Method for the preparation of carbinol group-containing organopolysiloxane'19955,364,896'Method for preparing silica filled organosiloxane compositions'19945,328,965'Curable organosilicone composition'19945,272,243'Organosilicon compounds and method for preparing same'19935,262,555'Method for the preparation of acryloxy group-containing or methacryloxy group-containing organosilicon compounds'19935,262,506'Organopolysiloxane and method for its preparation'19935,262,505'Silicone modified polyimide resin and method for preparing same'19935,254,606'Surface-protective agent'19935,238,967'Foamable organosiloxane composition'19935,223,596'Diphenysiloxane-dimethylsioxane copolymer and method for the preparation thereof'19935,194,649'Organopentasiloxane and method for its preparation'19935,183,912'Organopentasiloxane and method for its preparation'19935,177,160'Organopolysiloxane graft polyester and its manufacturing method'19935,175,328'Method for the preparation of organopolysiloxane'19925,169,920'Method for preparing diphenylsiloxane/dimethylsiloxane copolymers'19925,169,909'Method for the preparation of organopolysiloxane'19925,136,067'Chloroformyl-functional organopolysiloxane'19925,118,777'Polydimethylsiloxane terminated at one end by a branched aminoalkyl group and preparation thereof'19925,082,916'Organopolysiloxane graft polyester and its manufacturing method'19925,053,473'Method for the production of liquid-crystalline organopolysiloxanes'19915,041,591'Organopolysiloxane and method for its preparation'19914,981,607'Liquid-crystalline organopolysiloxanes and methods for their preparation'19914,975,490'Phthalic acid ester-modified organopolysiloxane and method for its preparation'19904,924,020'Phthalic acid ester-modified organopolysiloxane and method for its preparation'19904,889,770'Composition for the surface treatment of rubber'19894,876,373'Method of manufacturing organopolysiloxane having terminal alkenyl groups'19894,874,881'Method for producing a polydiorganosiloxane having a pendent alkenyl radical at its molecular center'19894,840,693'Organopolysiloxane hot-melt adhesive'19894,808,933'Rotating speed measuring apparatus having a corrector for low and high speeds using angle and frequency transducers'19894,276,589'Twelve-step current source inverter'19814,188,663'Protective device of a current source inverter'19804,099,108'Variable speed control apparatus for induction motor'19783,993,446'Cemented carbide material'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976Based in Sakai, JP· patent location history
1978–1981Based in Hitachi, JP· patent location history
1989–1991Patents assigned to TORAY SILICONE CO (6)· patent assignee history
1989–2020Based in Chiba, JP· patent location history
1989–2021Based in Ichihara, JP· patent location history
1989Based in Funabashi, JP· patent location history
1991–2008Patents assigned to DOW CORNING TORAY SILICONE (64)· patent assignee history
2000–2017Patents assigned to DOW CORNING (4)· patent assignee history
2008–2020Patents assigned to DOW CORNING TORAY CO LTD (14)· patent assignee history
2011–2016Patents assigned to OKAWA TADASHI (9)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
DOW CORNING TORAY SILICONE641991–2008
DOW CORNING TORAY CO LTD142008–2020
OKAWA TADASHIself92011–2016
TORAY SILICONE CO61989–1991
DOW CORNING42000–2017
Locations
LocationPatentsSpan
Chiba, JP671989–2020
Ichihara, JP251989–2021
Hitachi, JP31978–1981
Funabashi, JP11989
Sakai, JP11976