Patent intelligence · US
US 6838490
Silicone rubber in the form of a finely divided powder, method for the production and the use of the same
Silicone rubber in the form of a finely divided powder, method for the production and the use of the same
Patent details — US 6838490
- Jurisdiction
- US
- Status
- expired
- Grant date
- Jan 4, 2005
- Expiration
- Dec 30, 2024
- Claims
- 33
- CPC classes
- A61K, A61K8/891
Quick answer
US 6838490 (Silicone rubber in the form of a finely divided powder, method for the production and the use of the same) is held by BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION. Status: expired. Granted Jan 4, 2005. Expires Dec 30, 2024 (0 years remaining) — relevant for patent-cliff and LOE planning.
Key facts
- Grant date
- Expiration
- Claims
- 33
- CPC classes
- A61K, A61K8/891
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Frequently asked questions
What is US patent 6838490?
US 6838490 (Silicone rubber in the form of a finely divided powder, method for the production and the use of the same) is held by BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION. Status: expired. Granted Jan 4, 2005. Expires Dec 30, 2024 (0 years remaining) — relevant for patent-cliff and LOE planning.
Who owns US 6838490?
BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 335 pharmaceutical patents for this assignee.
When does US 6838490 expire?
Our index shows an expiration date of Dec 30, 2024 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.