US5074991C1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suppression of the evolution of hydrogen sulfide gases
Assignee: Baker Hughes Holdings LLC
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Filing: 1990-05-18
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Granted: 2001-05-08
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Expires: 2010-05-18
Abstract
No abstract record available.
Inventors
- 👤 Jerry J Weers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:58
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/02; C09; C09K; C09K8/00; C09K8/54; C10G; C10G29/00; C10G29/20; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2222; C10L1/2225; C10L1/232; C10L1/233; C10L1/2335; C10L1/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-05-07 | 2004-11-06 | 2005-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-05-07 | 2008-11-06 | 2009-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-05-07 | 2012-11-06 | 2013-05-08 | $7700.00 | Window Closed / Lapsed |