Assignee
KAWASAKI KASEI CHEMICALS
JP·40 granted patents·214 citations·filing 1977–2019
Top patents by PatentIndex Score
40 records- 0191US4467112AProcess for producing p-n-alkylbenzoic acidKAWASAKI KASEI CHEMICALS·Filed 1980·Granted Aug 21, 1984·57 cites·6 claims
- 0289US11149103B2Photopolymerization sensitizer composition and photopolymerizable composition comprising the sameKAWASAKI KASEI CHEMICALS·Filed 2017·Granted Oct 19, 2021·3 cites·4 claims
- 0388US10570227B2Photopolymerizable compositionKAWASAKI KASEI CHEMICALS·Filed 2016·Granted Feb 25, 2020·2 cites·16 claims
- 0481US4530745AMethod for electrolyzing cerous sulfateKAWASAKI KASEI CHEMICALS·Filed 1984·Granted Jul 23, 1985·19 cites·4 claims
- 0576US4632782AOxidizing an organic compoundKAWASAKI KASEI CHEMICALS·Filed 1984·Granted Dec 30, 1986·14 cites·7 claims
- 0666US5496939AMethod for producing copper phthalocyanine using thiolsKAWASAKI KASEI CHEMICALS·Filed 1995·Granted Mar 5, 1996·10 cites·9 claims
- 0764US4536337AProcess for the preparation of quinonesKAWASAKI KASEI CHEMICALS·Filed 1984·Granted Aug 20, 1985·8 cites·9 claims
- 0862US11958802B2Migration-resistant photopolymerization sensitizerKAWASAKI KASEI CHEMICALS·Filed 2019·Granted Apr 16, 2024·0 cites·13 claims
- 0960US12065521B2Compound having polycyclic aromatic skeleton, and endoperoxide compound of sameKAWASAKI KASEI CHEMICALS·Filed 2019·Granted Aug 20, 2024·0 cites·11 claims
- 1059US4980489A2-(1-alkylaminoalkyl)-3-hydroxy-1,4-naphthoquinoneKAWASAKI KASEI CHEMICALS·Filed 1989·Granted Dec 25, 1990·5 cites·10 claims
- 1158US5474593AAgent for treating metal ions in an aqueous solution, process for producing the metal ion-treating agent and method for treating metal ions in an aqueous solutionKAWASAKI KASEI CHEMICALS·Filed 1994·Granted Dec 12, 1995·11 cites·24 claims
- 1258US4202828AProcess for separation of naphthoquinone and phthalic acidKAWASAKI KASEI CHEMICALS·Filed 1978·Granted May 13, 1980·5 cites·9 claims
- 1357US6638356B2Gypsum-based building materialKAWASAKI KASEI CHEMICALS·Filed 2002·Granted Oct 28, 2003·4 cites·16 claims
- 1457US4127595AProcess for producing benzanthroneKAWASAKI KASEI CHEMICALS·Filed 1977·Granted Nov 28, 1978·5 cites·10 claims
- 1556US4906747AProcess for producing a metal phthalocyanine and/or its derivativeKAWASAKI KASEI CHEMICALS·Filed 1988·Granted Mar 6, 1990·5 cites·3 claims
- 1655US11420928B2Polymer photopolymerization sensitizerKAWASAKI KASEI CHEMICALS·Filed 2018·Granted Aug 23, 2022·0 cites·5 claims
- 1755US7279607B2Process for producing anthracene dietherKAWASAKI KASEI CHEMICALS·Filed 2002·Granted Oct 9, 2007·1 cites·8 claims
- 1854US4176125AProcess for producing 1,4-dihydroanthraquinoneKAWASAKI KASEI CHEMICALS·Filed 1977·Granted Nov 27, 1979·4 cites·3 claims
- 1949US4218376AProcess for producing highly chlorinated copper phthalocyanineKAWASAKI KASEI CHEMICALS·Filed 1978·Granted Aug 19, 1980·3 cites·8 claims
- 2047US5153314AProcess for producing a copper phthalocyanine compoundKAWASAKI KASEI CHEMICALS·Filed 1990·Granted Oct 6, 1992·4 cites·12 claims
- 2147US4369140AProcess for producing hydroanthraquinonesKAWASAKI KASEI CHEMICALS·Filed 1980·Granted Jan 18, 1983·3 cites·6 claims
- 2244US11352450B2Photopolymerization sensitizer compositionKAWASAKI KASEI CHEMICALS·Filed 2019·Granted Jun 7, 2022·0 cites·12 claims
- 2343US5153339AProcess for separation of naphthoquinone and phthalic acidKAWASAKI KASEI CHEMICALS·Filed 1982·Granted Oct 6, 1992·2 cites·6 claims
- 2442US5750743AMethod for preparing a solution of an alkali salt of anthrahydroquinoneKAWASAKI KASEI CHEMICALS·Filed 1996·Granted May 12, 1998·2 cites·7 claims
- 2542US5225578A2-(1-alkylaminoalkyl)-3-hydroxy-1,4-naphthoquinone, process for its production and processes for producing 2-(1-alkenyl)-3-hydroxy-1,4-naphthoquinone and 2-alkyl-3-acyloxy-1,4-naphthoquinone by using itKAWASAKI KASEI CHEMICALS·Filed 1992·Granted Jul 6, 1993·2 cites·8 claims
- 2640US4481073AProcess for removing anthraquinone type scaleKAWASAKI KASEI CHEMICALS·Filed 1981·Granted Nov 6, 1984·4 cites·9 claims
- 2740US4442176AHeat-sensitive recording sheetKAWASAKI KASEI CHEMICALS·Filed 1983·Granted Apr 10, 1984·5 cites·10 claims
- 2838US11613509B2Radical polymerization control agent and radical polymerization control methodKAWASAKI KASEI CHEMICALS·Filed 2018·Granted Mar 28, 2023·0 cites·10 claims
- 2938US4450111AProcess for the purification of anthraquinoneKAWASAKI KASEI CHEMICALS·Filed 1982·Granted May 22, 1984·1 cites·8 claims
- 3037US5834608AMethod for producing copper phthalocyanine in a reaction medium containing sulfurKAWASAKI KASEI CHEMICALS·Filed 1996·Granted Nov 10, 1998·1 cites·22 claims
- 3137US5702615AMethod for the treatment of waste waterKAWASAKI KASEI CHEMICALS·Filed 1996·Granted Dec 30, 1997·11 cites·14 claims
- 3237US4795604AMethod for molding 1,4,4a,9a-tetrahydroanthraquinoneKAWASAKI KASEI CHEMICALS·Filed 1987·Granted Jan 3, 1989·7 cites·15 claims
- 3337US4330470AProcess for producing highly chlorinated copper phthalocyanineKAWASAKI KASEI CHEMICALS·Filed 1980·Granted May 18, 1982·3 cites·6 claims
- 3437US4277257AProcess for preventing scale depositionKAWASAKI KASEI CHEMICALS·Filed 1979·Granted Jul 7, 1981·1 cites·5 claims
- 3535US4113749AProcess for producing anthroneKAWASAKI KASEI CHEMICALS·Filed 1977·Granted Sep 12, 1978·1 cites·15 claims
- 3634US4840932ACatalyst for producing 1,4-naphthoquinoneKAWASAKI KASEI CHEMICALS·Filed 1988·Granted Jun 20, 1989·7 cites·8 claims
- 3733US6106589AMethod for treating noble metal complex ionsKAWASAKI KASEI CHEMICALS·Filed 1997·Granted Aug 22, 2000·4 cites·14 claims
- 3831US4412954AProcess for producing 1,4,4a,9a-tetrahydroanthraquinone compoundKAWASAKI KASEI CHEMICALS·Filed 1981·Granted Nov 1, 1983·0 cites·2 claims
- 3927US4257851APurification of naphthoquinoneKAWASAKI KASEI CHEMICALS·Filed 1979·Granted Mar 24, 1981·0 cites·9 claims
- 4026US4561935AProcess for removing anthraquinone type scaleKAWASAKI KASEI CHEMICALS·Filed 1984·Granted Dec 31, 1985·0 cites·9 claims
Join the waitlist — get patent alerts
Get an alert when KAWASAKI KASEI CHEMICALS files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →