Assignee
OKUNO CHEM IND CO
JP·34 granted patents·10 pending applications·774 citations·filing 1977–2024
Top patents by PatentIndex Score
44 records- 0194US4692662AHigh contrast display deviceOKUNO CHEM IND CO·Filed 1985·Granted Sep 8, 1987·72 cites·19 claims
- 0291US4111767AElectrolytic stripping bath for removing metal coatings from stainless steel base materialsOKUNO CHEM IND CO·Filed 1977·Granted Sep 5, 1978·53 cites·4 claims
- 0389US4861442AZinc-nickel alloy plating bath and plating methodOKUNO CHEM IND CO·Filed 1989·Granted Aug 29, 1989·43 cites·13 claims
- 0489US4622069ACatalyst composition for forming electroless plating on ceramicsOKUNO CHEM IND CO·Filed 1985·Granted Nov 11, 1986·64 cites·12 claims
- 0586US4917958AMetal coated ceramic compositionOKUNO CHEM IND CO·Filed 1988·Granted Apr 17, 1990·50 cites·5 claims
- 0685US11047052B2Resin plating methodOKUNO CHEM IND CO·Filed 2015·Granted Jun 29, 2021·2 cites·7 claims
- 0785US5908543AMethod of electroplating non-conductive materialsOKUNO CHEM IND CO·Filed 1997·Granted Jun 1, 1999·61 cites·6 claims
- 0881US9657226B2Composition for etching treatment of resin materialOKUNO CHEM IND CO·Filed 2014·Granted May 23, 2017·5 cites·21 claims
- 0980US6331239B1Method of electroplating non-conductive plastic molded productsOKUNO CHEM IND CO·Filed 1997·Granted Dec 18, 2001·65 cites·5 claims
- 1078US12584225B1Resin material treatment method, and compositions for the sameOKUNO CHEM IND CO·Filed 2024·Granted Mar 24, 2026·0 cites·11 claims
- 1176US4444628AProcess for treating Al alloy casting and die castingOKUNO CHEM IND CO·Filed 1983·Granted Apr 24, 1984·33 cites·39 claims
- 1276US4172733AVitreous enamel compositionsOKUNO CHEM IND CO·Filed 1977·Granted Oct 30, 1979·25 cites·6 claims
- 1373US4940608ALocal electroless plating process for plasticsOKUNO CHEM IND CO·Filed 1988·Granted Jul 10, 1990·31 cites·18 claims
- 1471US5292361AElectroless palladium plating compositionOKUNO CHEM IND CO·Filed 1992·Granted Mar 8, 1994·34 cites·5 claims
- 1570US6905990B2Ceramic color composition and method for bending flat glassOKUNO CHEM IND CO·Filed 2000·Granted Jun 14, 2005·16 cites·7 claims
- 1670US4626071AOptical filter made of inorganic material for red lightOKUNO CHEM IND CO·Filed 1985·Granted Dec 2, 1986·29 cites·7 claims
- 1770US4469714AComposition for bonding electroconductive metal coating to electrically nonconductive materialOKUNO CHEM IND CO·Filed 1983·Granted Sep 4, 1984·28 cites·13 claims
- 1863US4150995AVitreous enamel composition containing palladium powderOKUNO CHEM IND CO·Filed 1977·Granted Apr 24, 1979·20 cites·7 claims
- 1960US9951433B2Conductive film-forming bathOKUNO CHEM IND CO·Filed 2014·Granted Apr 24, 2018·0 cites·12 claims
- 2060US6951604B2Production method for flexible printed boardOKUNO CHEM IND CO·Filed 2003·Granted Oct 4, 2005·6 cites·18 claims
- 2160US2024301581A1Lightfastness improver for anodic oxide film of dyed aluminum or aluminum alloy and method for improving lightfastness of filmOKUNO CHEM IND CO·Filed 2022·Application pending·0 cites
- 2258US4770751AMethod for forming on a nonconductor a shielding layer against electromagnetic radiationOKUNO CHEM IND CO·Filed 1986·Granted Sep 13, 1988·18 cites·5 claims
- 2357US9920416B2Blackening treatment solution for black Cr—Co alloy plating filmOKUNO CHEM IND CO·Filed 2013·Granted Mar 20, 2018·0 cites·13 claims
- 2456US4741963AOptical filter made of inorganic material for green lightOKUNO CHEM IND CO·Filed 1985·Granted May 3, 1988·19 cites·1 claims
- 2554US11912612B2Plating film and plating film production methodOKUNO CHEM IND CO·Filed 2022·Granted Feb 27, 2024·0 cites·14 claims
- 2653US10036097B2Conductive coating film forming bathOKUNO CHEM IND CO·Filed 2013·Granted Jul 31, 2018·0 cites·10 claims
- 2753US5616230AMethod for direct-electroplating an electrically nonconductive substrateOKUNO CHEM IND CO·Filed 1994·Granted Apr 1, 1997·19 cites·6 claims
- 2852US4741962AOptical filter made of inorganic material for blue lightOKUNO CHEM IND CO·Filed 1985·Granted May 3, 1988·16 cites·1 claims
- 2952US2025290216A1Plating film manufacturing methodOKUNO CHEM IND CO·Filed 2023·Application pending·0 cites
- 3051US5236793AMaterial for color filter overcoat and material for color filter useful for liquid crystal display, process for formation of overcoat and process for formation of color filterOKUNO CHEM IND CO·Filed 1991·Granted Aug 17, 1993·18 cites·10 claims
- 3150US5380562AProcess for electroless gold platingOKUNO CHEM IND CO·Filed 1993·Granted Jan 10, 1995·17 cites·10 claims
- 3249US4792358AInorganic coating compositionsOKUNO CHEM IND CO·Filed 1987·Granted Dec 20, 1988·12 cites·8 claims
- 3349US2020407854A1Composition for pretreatment for electroless plating, pretreatment method for electroless plating, and electroless plating methodOKUNO CHEM IND CO·Filed 2018·Application pending·0 cites
- 3447US2025215597A1Copper plating solution for pr pulse electrolysis and copper plating method by means of pr pulse electrolysisOKUNO CHEM IND CO·Filed 2023·Application pending·0 cites
- 3546US2010155255A1Pretreatment process for electroless plating of resin molded body, method for plating resin molded body, and pretreatment agentOKUNO CHEM IND CO·Filed 2008·Application pending·0 cites
- 3643US11649558B2Electrolytic stripping agent for jigOKUNO CHEM IND CO·Filed 2016·Granted May 16, 2023·0 cites·30 claims
- 3743US5147454AElectrolessly solder plating compositionOKUNO CHEM IND CO·Filed 1990·Granted Sep 15, 1992·18 cites·19 claims
- 3843US2018298497A1Chemical conversion solution for aluminum or aluminum alloy, chemical conversion method, and chemical conversion filmOKUNO CHEM IND CO·Filed 2016·Application pending·0 cites
- 3941US10184186B2Composition for blackening copper-based or silver-based metalsOKUNO CHEM IND CO·Filed 2015·Granted Jan 22, 2019·0 cites·4 claims
- 4041US2019112726A1Sealing liquid for anodic oxide coating films of aluminum alloy, concentrated liquid and sealing methodOKUNO CHEM IND CO·Filed 2017·Application pending·0 cites
- 4139US2017114470A1Multilayer plating film and article having multilayer plating filmOKUNO CHEM IND CO·Filed 2015·Application pending·0 cites
- 4238US12258488B2Film-forming treatment liquidOKUNO CHEM IND CO·Filed 2018·Granted Mar 25, 2025·0 cites·8 claims
- 4338US2017204528A1Copper-tin alloy plating bathOKUNO CHEM IND CO·Filed 2015·Application pending·0 cites
- 4428US2019071781A1Coating formation composition and metal material treatment methodOKUNO CHEM IND CO·Filed 2016·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when OKUNO CHEM IND CO 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 →