Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7914627 | Processing solution for forming hexavalent chromium free and corrosion resistant conversion film on zinc or zinc alloy plating layers, hexavalent chromium free and corrosion resistant conversion film, method for forming the same | Katsuhide Oshima, Manabu Inoue, Tomitaka Yamamoto | 2011-03-29 |
| 7745008 | Processing solution for forming hexavalent chromium free and corrosion resistant conversion film on zinc or zinc alloy plating layers, hexavalent chromium free and corrosion resistant conversion film, method for forming the same | Katsuhide Oshima, Manabu Inoue, Tomitaka Yamamoto | 2010-06-29 |
| 6858098 | PROCESSING SOLUTION FOR FORMING HEXAVALENT CHROMIUM FREE AND CORROSION RESISTANT CONVERSION FILM ON ZINC OR ZINC ALLOY PLATING LAYERS, HEXAVALENT CHROMIUM FREE AND CORROSION RESISTANT CONVERSION FILM, METHOD FOR FORMING THE SAME | Katsuhide Oshima, Manabu Inoue, Tomitaka Yamamoto | 2005-02-22 |
| 6719852 | PROCESSING SOLUTION FOR FORMING HEXAVALENT CHROMIUM FREE AND CORROSION RESISTANT CONVERSION FILM ON ZINC OR ZINC ALLOY PLATING LAYERS, HEXAVALENT CHROMIUM FREE AND CORROSION RESISTANT CONVERSION FILM AND METHOD FOR FORMING THE SAME | Katsuhide Oshima, Manabu Inoue, Tomitaka Yamamoto | 2004-04-13 |
| 5772865 | Electrolytic conversion solution for treating metal surface and method for electrolytic conversion | Akira Hashimoto, Masaru Kawai, Yukihisa Toyoda | 1998-06-30 |
| 5665172 | Method for washing an article with composition having a brominated hydrocarbon and stabilizer | Katsuhide Oshima | 1997-09-09 |
| 5582709 | Zinc-cobalt alloy-plating alkaline bath and plating method using the same | Katsuhide Oshima, Toshio Igari, Takeshi Kunihiro | 1996-12-10 |
| 5492645 | Deterging solvent composition with n-or iso-propyl bromide, a nitroalkane, and an ethylene glycol monoalkyl ether | Katsuhide Oshima | 1996-02-20 |