Inventor · disambiguated record
Ryozo Shiroishi
Also filed as: SHIROISHI RYOZO
8 granted patents·8 pending applications·2 citations·filing 2011–2023
73Inventor score
Files withTOYO SEIKAN GROUP HOLDINGS LTD11TOYO SEIKAN GROUP HOLDONGS LTD2SHIROISHI RYOZO1TOYO SEIKAN CO LTD1TOYO SEIKAN KAISHA LTD1
Top patents by PatentIndex Score
16 records- 0178US2023286032A1Machining jig, machining method, and method of manufacturing seamless can bodiesTOYO SEIKAN GROUP HOLDINGS LTD·Filed 2023·Application pending·0 cites
- 0269US12343778B2Die for ironing working and die moduleTOYO SEIKAN GROUP HOLDINGS LTD·Filed 2020·Granted Jul 1, 2025·0 cites·2 claims
- 0369US12036597B2Jig for metal plastic workingTOYO SEIKAN GROUP HOLDINGS LTD·Filed 2019·Granted Jul 16, 2024·0 cites·4 claims
- 0468US2021354191A1Machining jig, machining method, and method of manufacturing seamless can bodiesTOYO SEIKAN GROUP HOLDONGS LTD·Filed 2019·Application pending·0 cites
- 0564US12157602B2Aluminum canTOYO SEIKAN CO LTD·Filed 2022·Granted Dec 3, 2024·0 cites·1 claims
- 0661US9149901B2Method of polishing the diamond-surfaceSHIROISHI RYOZO·Filed 2011·Granted Oct 6, 2015·2 cites·20 claims
- 0760US11745245B2Metallic worked articlesTOYO SEIKAN GROUP HOLDINGS LTD·Filed 2019·Granted Sep 5, 2023·0 cites·2 claims
- 0857US2018229287A1Die for ironing working and die moduleTOYO SEIKAN GROUP HOLDINGS LTD·Filed 2016·Application pending·0 cites
- 0954US11338954B2Aluminum canTOYO SEIKAN KAISHA LTD·Filed 2017·Granted May 24, 2022·0 cites·7 claims
- 1054US10155293B2Diamond surface polishing method and apparatus for implementing sameTOYO SEIKAN GROUP HOLDINGS LTD·Filed 2017·Granted Dec 18, 2018·0 cites·19 claims
- 1154US2023119966A1Method for manufacturing bottomed cylindrical bodyTOYO SEIKAN GROUP HOLDINGS LTD·Filed 2021·Application pending·0 cites
- 1252US2021394248A1Pressing die and press working methodTOYO SEIKAN GROUP HOLDONGS LTD·Filed 2019·Application pending·0 cites
- 1350US11267033B2Mold and method for manufacturing drawn canTOYO SEIKAN GROUP HOLDINGS LTD·Filed 2016·Granted Mar 8, 2022·0 cites·9 claims
- 1449US2023122197A1Method for manufacturing bottomed cylindrical bodyTOYO SEIKAN GROUP HOLDINGS LTD·Filed 2021·Application pending·0 cites
- 1541US2020055147A1Method of forming grooves of a fine periodic structure in the surface of the diamondTOYO SEIKAN GROUP HOLDINGS LTD·Filed 2017·Application pending·0 cites
- 1640US2017106494A1Polishing deviceTOYO SEIKAN GROUP HOLDINGS LTD·Filed 2016·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Ryozo Shiroishi files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →