P

Inventor

KUBOTA NAOHIRO

52 patents
⚠️ This page may combine multiple inventors who share the name “KUBOTA NAOHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ARGUS CHEM

23 patents
US4110306AAug 29, 1978

Stabilizers for synthetic polymers comprising 2,2,6,6-tetramethyl-4-piperidyl carboxylic acid ester, a triphosphite, and an acid phosphite or salt thereof

ARGUS CHEM45 citations93
US4096114AJun 20, 1978

2,2,6,6-Tetramethyl piperidyl-4-phosphites as stabilizers for organic polymeric materials

ARGUS CHEM36 citations92
US4255301AMar 10, 1981

Glycol carbonate ester stabilizers for synthetic resins

ARGUS CHEM27 citations82
US4124564ANov 7, 1978

Synthetic resin stabilizer comprising a 2,2,6,6-tetramethylpiperidine-4-alcohol ester and an oligomeric carbonate

ARGUS CHEM19 citations82
US4118369AOct 3, 1978

2,2,6,6-Tetrasubstituted-4-piperidyl carboxy heterocyclic compounds as stabilizers for synthetic polymers

ARGUS CHEM22 citations82
US4102858AJul 25, 1978

2,2,6,6-tetramethyl-4-piperidyl thiocarboxylates and aminocarboxylates and synthetic resin compositions containing the same

ARGUS CHEM24 citations82
US4250312AFeb 10, 1981

Process for preparing 4-piperidone spiroketal compounds

ARGUS CHEM8 citations74
US4222931ASep 16, 1980

Stabilizers for synthetic polymers comprising 2,2,6,6-tetramethyl-4-piperidyl ether alcohol or ether, phosphonic acid ester and phenolic antioxidant

ARGUS CHEM10 citations74
US4219463AAug 26, 1980

Stabilizers for synthetic polymers comprising 2,2,6,6-tetramethyl-4-piperidyl carboxylic acid ester, β-thioalkyl propionic acid ester and phenol

ARGUS CHEM8 citations74
US4210577AJul 1, 1980

Stabilizers for synthetic polymers comprising 2,2,6,6-tetramethyl-4-piperidyl carboxylic acid ester, phosphonic acid ester and phenol

ARGUS CHEM13 citations74
US4136081AJan 23, 1979

2,2,6,6-tetramethyl-4-piperidyl carboxylic acid esters of aliphatic tetracarboxylic acids as stabilizers for synthetic polymers

ARGUS CHEM17 citations74
US4128608ADec 5, 1978

2,2,6,6-Tetramethyl-4-piperidyl spiro aliphatic ethers as stabilizers for synthetic polymers

ARGUS CHEM12 citations74
US4116927ASep 26, 1978

2,2,6,6-Tetramethyl-4-piperidyl carboxylic acid esters of butane or butene tri carboxylic acids as stabilizers for synthetic polymers

ARGUS CHEM8 citations74
US4115476ASep 19, 1978

2,2,6,6-Tetramethyl-4-piperidyl carbonic acid esters of dihydric alcohols and phenols as stabilizers for synthetic polymers

ARGUS CHEM17 citations74
US4105625AAug 8, 1978

2,2,6,6-tetramethyl-4-piperidyl carboxylic acid esters of hydroxy aliphatic di- and tri-carboxylic acids as light stabilizers for synthetic polymers

ARGUS CHEM9 citations74
US4101508AJul 18, 1978

2,2,6,6-Tetramethyl-4-piperidyl bicyclic heptane and octane carboxylic acid esters as stabilizers for synthetic polymers

ARGUS CHEM8 citations74
US4186151AJan 29, 1980

Process for preparing a 5,5'-methylenebis(2-hydroxy-4-alkoxybenzophenone)

ARGUS CHEM10 citations73
US4169089ASep 25, 1979

Hydroxybenzophenone stabilizer composition

ARGUS CHEM9 citations73
US4312804AJan 26, 1982

2,2,6,6-Tetraalkyl-4-piperidyl alcohol esters of tetradecylene polycarboxylic acids as light stabilizers for synthetic polymers

ARGUS CHEM4 citations63
US4250313AFeb 10, 1981

Process for preparing 4-piperidone spiroketal compounds

ARGUS CHEM4 citations63
US4189409AFeb 19, 1980

Process for preparing a methylenebis(2-hydroxy-4-alkoxybenzophenone) and acyloxymethyl 2-OH 4-alkoxy benzophenones

ARGUS CHEM3 citations63
US4173599ANov 6, 1979

2,2,6,6-Tetraalkyl-4-piperidyl ketones and ketals as stabilizers for synthetic polymers

ARGUS CHEM3 citations63
US4252958AFeb 24, 1981

Process for preparing 2,2,6,6-Tetramethyl-4-oxopiperidine

ARGUS CHEM5 citations62

ADEKA ARGUS CHEMICAL CO LTD

15 patents
US4681905AJul 21, 1987

Stabilizer compositions for synthetic resins imparting improved light stability

ADEKA ARGUS CHEMICAL CO LTD105 citations96
US4684679AAug 4, 1987

Polyacetal resin compositions having improved resistance to deterioration when exposed to light and containing alkylidene bis(benzotriazolyl phenols)

ADEKA ARGUS CHEMICAL CO LTD34 citations93
US4336183AJun 22, 1982

2,2,6,6-Tetramethyl-4-piperidyl carboxylic acid esters and amides of mono and poly alcohols, phenols and amines as stabilizers for synthetic polymers

ADEKA ARGUS CHEMICAL CO LTD44 citations93
US4396735AAug 2, 1983

Synergistic light stabilizer compositions for synthetic resins and resin compositions containing the same

ADEKA ARGUS CHEMICAL CO LTD26 citations82
US4937348AJun 26, 1990

Process for preparing 2,2'-methylene-bis-(4-hydrocarbyl-6-benzotriazolylphenols)

ADEKA ARGUS CHEMICAL CO LTD17 citations74
US4684680AAug 4, 1987

Thermosetting synthetic resin lacquer compositions having improved light stability

ADEKA ARGUS CHEMICAL CO LTD15 citations74
US4405736ASep 20, 1983

2,2,6,6-Tetramethyl-4-piperidyl spiro aliphatic ethers and stabilizers for synthetic polymers

ADEKA ARGUS CHEMICAL CO LTD14 citations73
US4404301ASep 13, 1983

Polymeric light stabilizers having at least one 2,2,6,6-tetraalkyl piperidyl group and synthetic resin compositions containing the same

ADEKA ARGUS CHEMICAL CO LTD15 citations73
US4351915ASep 28, 1982

2,2,6,6-Tetramethyl-4-piperidyl spiro aliphatic ethers as stabilizers for synthetic polymers

ADEKA ARGUS CHEMICAL CO LTD11 citations70
US4499220AFeb 12, 1985

Copolymer light stabilizers having at least one 2,2,6,6-tetraalkyl piperidyl group and synthetic resin compositions containing the same

ADEKA ARGUS CHEMICAL CO LTD6 citations63
US4378443AMar 29, 1983

2,2,6,6-Tetraalkyl-4-piperidyl-bix-spiro-ethers as light stabilizers for synthetic polymers

ADEKA ARGUS CHEMICAL CO LTD4 citations63
US4500663AFeb 19, 1985

Light stabilizing N,N,N-tris(2,2,6,6-tetramethyl-4-piperidone ketal)-1,3,5-triazine derivatives and light stabilized synthetic resin compositions

ADEKA ARGUS CHEMICAL CO LTD2 citations62
US4423174ADec 27, 1983

Synthetic resin compositions containing 2,2,6,6-tetramethyl piperidyl ethers

ADEKA ARGUS CHEMICAL CO LTD3 citations62
US4418196ANov 29, 1983

Process for preparing triacetone amine

ADEKA ARGUS CHEMICAL CO LTD3 citations62
US4405737ASep 20, 1983

N-2-Hydroxypropyl piperidines and compositions thereof

ADEKA ARGUS CHEMICAL CO LTD5 citations61

ASAHI DENKA KOGYO KK

3 patents

DENSO CORP

3 patents

HITACHI CHEMICAL CO LTD

3 patents

ASAHI DENKA CO LTD

1 patent

LEISTNER WILLIAM E

1 patent

KUBOTA NAOHIRO

1 patent

Showing the top 50 of 52 patents by PatentIndex Score.