US 6838490
Silicone rubber in the form of a finely divided powder, method for the production and the use of the same
expired A61KA61K8/891
Quick answer
US patent 6838490 (Silicone rubber in the form of a finely divided powder, method for the production and the use of the same) held by BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION expires Mon Dec 30 2024 00:00:00 GMT+0000 (Coordinated Universal Time). Status: expired.
Key facts
- Applicant
- BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION
- Grant date
- Tue Jan 04 2005 00:00:00 GMT+0000 (Coordinated Universal Time)
- Expiration
- Mon Dec 30 2024 00:00:00 GMT+0000 (Coordinated Universal Time)
- Claims
- 33
- CPC classes
- A61K, A61K8/891