Inventor · disambiguated record
Naohiro Kubota
Also filed as: KUBOTA NAOHIRO · MINAGAWA MOTONOBU · NAKAHARA YUTAKA
52 granted patents·820 citations·filing 1976–2003
99Inventor score
Files withARGUS CHEM23ADEKA ARGUS CHEMICAL CO LTD17ASAHI DENKA KOGYO KK3DENSO CORP3HITACHI CHEMICAL CO LTD3
Top patents by PatentIndex Score
52 records- 0197US4681905AStabilizer compositions for synthetic resins imparting improved light stabilityADEKA ARGUS CHEMICAL CO LTD·Filed 1985·Granted Jul 21, 1987·105 cites·36 claims
- 0294US4096114A2,2,6,6-Tetramethyl piperidyl-4-phosphites as stabilizers for organic polymeric materialsARGUS CHEM·Filed 1976·Granted Jun 20, 1978·36 cites·30 claims
- 0393US4110306AStabilizers for synthetic polymers comprising 2,2,6,6-tetramethyl-4-piperidyl carboxylic acid ester, a triphosphite, and an acid phosphite or salt thereofARGUS CHEM·Filed 1976·Granted Aug 29, 1978·45 cites·30 claims
- 0492US4102858A2,2,6,6-tetramethyl-4-piperidyl thiocarboxylates and aminocarboxylates and synthetic resin compositions containing the sameARGUS CHEM·Filed 1976·Granted Jul 25, 1978·24 cites·58 claims
- 0589US6872493B2Nonaqueous electrolytic solution and nonaqueous secondary batteryDENSO CORP·Filed 2001·Granted Mar 29, 2005·44 cites·18 claims
- 0689US4336183A2,2,6,6-Tetramethyl-4-piperidyl carboxylic acid esters and amides of mono and poly alcohols, phenols and amines as stabilizers for synthetic polymersADEKA ARGUS CHEMICAL CO LTD·Filed 1980·Granted Jun 22, 1982·44 cites·33 claims
- 0788US5071888ACarbazole photoinitiators for the photopolymerization of unsaturated compoundsASAHI DENKA KOGYO KK·Filed 1985·Granted Dec 10, 1991·25 cites·11 claims
- 0886US4684679APolyacetal resin compositions having improved resistance to deterioration when exposed to light and containing alkylidene bis(benzotriazolyl phenols)ADEKA ARGUS CHEMICAL CO LTD·Filed 1986·Granted Aug 4, 1987·34 cites·28 claims
- 0985US4255301AGlycol carbonate ester stabilizers for synthetic resinsARGUS CHEM·Filed 1978·Granted Mar 10, 1981·27 cites·24 claims
- 1082US4937348AProcess for preparing 2,2'-methylene-bis-(4-hydrocarbyl-6-benzotriazolylphenols)ADEKA ARGUS CHEMICAL CO LTD·Filed 1987·Granted Jun 26, 1990·17 cites·25 claims
- 1181US4118369A2,2,6,6-Tetrasubstituted-4-piperidyl carboxy heterocyclic compounds as stabilizers for synthetic polymersARGUS CHEM·Filed 1976·Granted Oct 3, 1978·22 cites·30 claims
- 1280US4396735ASynergistic light stabilizer compositions for synthetic resins and resin compositions containing the sameADEKA ARGUS CHEMICAL CO LTD·Filed 1980·Granted Aug 2, 1983·26 cites·29 claims
- 1379US4124564ASynthetic resin stabilizer comprising a 2,2,6,6-tetramethylpiperidine-4-alcohol ester and an oligomeric carbonateARGUS CHEM·Filed 1977·Granted Nov 7, 1978·19 cites·24 claims
- 1477US4250312AProcess for preparing 4-piperidone spiroketal compoundsARGUS CHEM·Filed 1979·Granted Feb 10, 1981·8 cites·12 claims
- 1576US4115476A2,2,6,6-Tetramethyl-4-piperidyl carbonic acid esters of dihydric alcohols and phenols as stabilizers for synthetic polymersARGUS CHEM·Filed 1977·Granted Sep 19, 1978·17 cites·33 claims
- 1675US4186151AProcess for preparing a 5,5'-methylenebis(2-hydroxy-4-alkoxybenzophenone)ARGUS CHEM·Filed 1978·Granted Jan 29, 1980·10 cites·5 claims
- 1775US4136081A2,2,6,6-tetramethyl-4-piperidyl carboxylic acid esters of aliphatic tetracarboxylic acids as stabilizers for synthetic polymersARGUS CHEM·Filed 1976·Granted Jan 23, 1979·17 cites·30 claims
- 1873US4210577AStabilizers for synthetic polymers comprising 2,2,6,6-tetramethyl-4-piperidyl carboxylic acid ester, phosphonic acid ester and phenolARGUS CHEM·Filed 1977·Granted Jul 1, 1980·13 cites·35 claims
- 1969US7169510B2Nonaqueous electrolytic solution and nonaqueous secondary battery using the sameASAHI DENKA CO LTD·Filed 2003·Granted Jan 30, 2007·9 cites·20 claims
- 2068US4222931AStabilizers for synthetic polymers comprising 2,2,6,6-tetramethyl-4-piperidyl ether alcohol or ether, phosphonic acid ester and phenolic antioxidantARGUS CHEM·Filed 1977·Granted Sep 16, 1980·10 cites·27 claims
- 2168US4128608A2,2,6,6-Tetramethyl-4-piperidyl spiro aliphatic ethers as stabilizers for synthetic polymersARGUS CHEM·Filed 1977·Granted Dec 5, 1978·12 cites·24 claims
- 2267US4985564AAcridine compound and photopolymerizable composition using the sameHITACHI CHEMICAL CO LTD·Filed 1989·Granted Jan 15, 1991·6 cites·9 claims
- 2367US4404301APolymeric light stabilizers having at least one 2,2,6,6-tetraalkyl piperidyl group and synthetic resin compositions containing the sameADEKA ARGUS CHEMICAL CO LTD·Filed 1982·Granted Sep 13, 1983·15 cites·26 claims
- 2466US4252958AProcess for preparing 2,2,6,6-Tetramethyl-4-oxopiperidineARGUS CHEM·Filed 1978·Granted Feb 24, 1981·5 cites·13 claims
- 2563US6210840B1Flame-retardant electrolytic solution and nonaqueous secondary battery containing the sameDENSO CORP·Filed 1998·Granted Apr 3, 2001·36 cites·8 claims
- 2663US4405736A2,2,6,6-Tetramethyl-4-piperidyl spiro aliphatic ethers and stabilizers for synthetic polymersADEKA ARGUS CHEMICAL CO LTD·Filed 1981·Granted Sep 20, 1983·14 cites·44 claims
- 2762US4405737AN-2-Hydroxypropyl piperidines and compositions thereofADEKA ARGUS CHEMICAL CO LTD·Filed 1982·Granted Sep 20, 1983·5 cites·35 claims
- 2860US6566015B1Non-aqueous electrolytic salt and non-aqueous electrolytic secondary battery in which it is usedDENSO CORP·Filed 1999·Granted May 20, 2003·32 cites·7 claims
- 2960US4250313AProcess for preparing 4-piperidone spiroketal compoundsARGUS CHEM·Filed 1980·Granted Feb 10, 1981·4 cites·14 claims
- 3060US4169089AHydroxybenzophenone stabilizer compositionARGUS CHEM·Filed 1978·Granted Sep 25, 1979·9 cites·14 claims
- 3160US4105625A2,2,6,6-tetramethyl-4-piperidyl carboxylic acid esters of hydroxy aliphatic di- and tri-carboxylic acids as light stabilizers for synthetic polymersARGUS CHEM·Filed 1977·Granted Aug 8, 1978·9 cites·24 claims
- 3258US5089377APhotopolymerizable composition and processes using acridine photoinitiatorsASAHI DENKA KOGYO KK·Filed 1990·Granted Feb 18, 1992·5 cites·6 claims
- 3358US4684680AThermosetting synthetic resin lacquer compositions having improved light stabilityADEKA ARGUS CHEMICAL CO LTD·Filed 1985·Granted Aug 4, 1987·15 cites·24 claims
- 3458US4116927A2,2,6,6-Tetramethyl-4-piperidyl carboxylic acid esters of butane or butene tri carboxylic acids as stabilizers for synthetic polymersARGUS CHEM·Filed 1977·Granted Sep 26, 1978·8 cites·18 claims
- 3557US4173599A2,2,6,6-Tetraalkyl-4-piperidyl ketones and ketals as stabilizers for synthetic polymersARGUS CHEM·Filed 1978·Granted Nov 6, 1979·3 cites·29 claims
- 3656US4460725APolyethers containing 2,2,6,6-tetramethyl piperidinyl carboxylic acid ester groups and synthetic resin compositionsLEISTNER WILLIAM E·Filed 1983·Granted Jul 17, 1984·10 cites·25 claims
- 3756US4378443A2,2,6,6-Tetraalkyl-4-piperidyl-bix-spiro-ethers as light stabilizers for synthetic polymersADEKA ARGUS CHEMICAL CO LTD·Filed 1980·Granted Mar 29, 1983·4 cites·27 claims
- 3856US4219463AStabilizers for synthetic polymers comprising 2,2,6,6-tetramethyl-4-piperidyl carboxylic acid ester, β-thioalkyl propionic acid ester and phenolARGUS CHEM·Filed 1977·Granted Aug 26, 1980·8 cites·36 claims
- 3956US4101508A2,2,6,6-Tetramethyl-4-piperidyl bicyclic heptane and octane carboxylic acid esters as stabilizers for synthetic polymersARGUS CHEM·Filed 1976·Granted Jul 18, 1978·8 cites·26 claims
- 4055US4418196AProcess for preparing triacetone amineADEKA ARGUS CHEMICAL CO LTD·Filed 1982·Granted Nov 29, 1983·3 cites·16 claims
- 4154US4351915A2,2,6,6-Tetramethyl-4-piperidyl spiro aliphatic ethers as stabilizers for synthetic polymersADEKA ARGUS CHEMICAL CO LTD·Filed 1981·Granted Sep 28, 1982·11 cites·43 claims
- 4254US4189409AProcess for preparing a methylenebis(2-hydroxy-4-alkoxybenzophenone) and acyloxymethyl 2-OH 4-alkoxy benzophenonesARGUS CHEM·Filed 1978·Granted Feb 19, 1980·3 cites·19 claims
- 4348US4323684AProcess for preparing a 2,2,6,6-tetraalkyl-4-piperidyl spiro aliphatic etherKUBOTA NAOHIRO·Filed 1980·Granted Apr 6, 1982·3 cites·10 claims
- 4447US5334484APhotopolymerizable composition and photopolymerizable elementHITACHI CHEMICAL CO LTD·Filed 1991·Granted Aug 2, 1994·11 cites·3 claims
- 4547US4499220ACopolymer light stabilizers having at least one 2,2,6,6-tetraalkyl piperidyl group and synthetic resin compositions containing the sameADEKA ARGUS CHEMICAL CO LTD·Filed 1982·Granted Feb 12, 1985·6 cites·32 claims
- 4645US5045433ASubstituted acridine derivatives and application thereofHITACHI CHEMICAL CO LTD·Filed 1990·Granted Sep 3, 1991·8 cites·3 claims
- 4741US4312804A2,2,6,6-Tetraalkyl-4-piperidyl alcohol esters of tetradecylene polycarboxylic acids as light stabilizers for synthetic polymersARGUS CHEM·Filed 1980·Granted Jan 26, 1982·4 cites·28 claims
- 4837US6117487AProcess for forming metal oxide film by means of CVD systemASAHI DENKA KOGYO KK·Filed 1999·Granted Sep 12, 2000·6 cites·5 claims
- 4937US4423174ASynthetic resin compositions containing 2,2,6,6-tetramethyl piperidyl ethersADEKA ARGUS CHEMICAL CO LTD·Filed 1982·Granted Dec 27, 1983·3 cites·43 claims
- 5036US4525506APolyhydric alcohol ethers of 2,2,6,6-tetramethyl-4-piperidone ketals and synthetic resin compositionsADEKA ARGUS CHEMICAL CO LTD·Filed 1983·Granted Jun 25, 1985·0 cites·26 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →