US 8,652,235 · Application 12/429,058 · Granted Feb 18, 2014
US 8,652,235
Sorbents for the oxidation and removal of mercury
Estimated expiration
—
- Maintenance fee lapse detected.
- Patent may have expired due to maintenance fees: Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362
Earliest effective filing
Apr 23, 2009
+ 20 years
—
PTA +0d
—
No TD
—
Final
—
This calculation includes patent term adjustment (PTA) under 35 U.S.C. §154(b). Patent term extension (PTE) under 35 U.S.C. §156 (for FDA-regulated products) is not included.
Calculation details
Base term
- Filing date
- April 23, 2009
- Earliest effective filing
- April 23, 2009
- Issue date
- February 18, 2014
- PTA
- 0 days
- Base expiry (before PTA)
- —
April 23, 2009 + 20 years = —
Patent term extension under 35 U.S.C. §156, which can apply to certain drug, biologic, animal drug and medical device patents, is not included in this calculation. How PTE is calculated
The prosecution record for your AI
Application 12/429,058 · US 8,652,235
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www.patentreply.ai/tools/patent-expiration/US8652235Data sourced from public USPTO records. This tool provides informational estimates and should not be relied upon as legal advice. Always verify patent expiration dates independently, especially where patent term extension, terminal disclaimers, or unusual continuity issues may apply.