Inventor
Tomitaka Yamamoto
Inventor
Tokyo, JP
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C23Cprimary
C23CCoating metallic material56%
Y10TTechnical subjects covered by former us classification22%
C02FTreatment of water, waste water, sewage, or sludge6%
C22CAlloys6%
C23GCleaning or de-greasing of metallic material by chemical methods other than electrolysis6%
C25DProcesses for the electrolytic or electrophoretic production of coatings6%
PatentTitleYear
9,249,509'Method for regenerating solution for nitric acid activation treatment of zinc-plated metal member surface, and regeneration treatment apparatus using the same'20168,337,641'Treatment solution for forming black hexavalent chromium-free chemical conversion coating film on zinc or zinc alloy'20127,914,627'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'20117,745,008'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'20106,858,098'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'20056,719,852'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'20045,938,861'Method for forming a rust proof film'19995,843,338'Water-soluble composition for water-repellent treatments of zinc and zinc alloy and method for water repellent treatment'19985,743,971'Liquid rust proof film-forming composition and rust proof film-forming method'19985,565,042'Black chromate solution'1996Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1996–2016Patents assigned to DIPSOL CHEM (10)· patent assignee history
1996–2016Based in Tokyo, JP· patent location history
2010–2011Based in Katsushika-ku, JP· patent location history
2012Patents assigned to OKABE NAOKI (1)· patent assignee history
2012Patents assigned to YAMAMOTO TOMITAKA (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DIPSOL CHEM | 10 | 1996–2016 |
| OKABE NAOKI | 1 | 2012 |
| YAMAMOTO TOMITAKAself | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 8 | 1996–2016 |
| Katsushika-ku, JP | 2 | 2010–2011 |