Inventor

Kiyoshi Yokokawa

Inventor

Annaka, JP

Overview

1976–1998

Patent span

Chemistry

Primary field (CPC C)

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C03Bprimary

C03BManufacture, shaping, or supplementary processes22%

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients9%

Y02PClimate change mitigation technologies in the production or processing of goods9%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%

B24BMachines, devices, or processes for grinding or polishing6%

B28DWorking stone or stone-like materials6%

Y10TTechnical subjects covered by former us classification6%

A61KPreparations for medical, dental or toiletry purposes3%

A61PSpecific therapeutic activity of chemical compounds or medicinal preparations3%

C01BNon-metallic elements3%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1976–1989Patents assigned to SHINETSU CHEMICAL CO (7)· patent assignee history

1976–1998Based in Annaka, JP· patent location history

1986–1989Based in Gunma, JP· patent location history

1993Patents assigned to SUMITOMO PHARMA (1)· patent assignee history

1993Based in Nishinomiya, JP· patent location history

1996–1998Patents assigned to SHINETSU QUARTZ PROD (3)· patent assignee history

1998Patents assigned to HERAEUS QUARZGLAS (3)· patent assignee history

Assignee and location history derived from the patent record.

Assignees

Locations