US3257776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for reducing the concentration of mercury in hydrogen gas
Assignee: Honeywell International Inc
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Filing: 1963-01-28
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Granted: 1966-06-28
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Expires: 1983-01-28
Abstract
No abstract record available.
Inventors
- 👤 Jong C Park
- 👤 Leon O Winstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:46
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/50; C01B3/56; C01B3/58; A; A61; A61L; A61L9/00; A61L9/01; A62; A62B; A62B19/00; B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/34; B01D53/46; B01D53/64; B01J; B01J20/00; B01J20/02; B01J20/0203; B01J20/024; B01J20/0274; B01J20/0285; B01J27/00; B01J27/02; B01J27/04; C01B32/00; C01B32/30; C01B32/312; C01B32/342; C01B32/348; B01D2253/00; B01D2253/10; B01D2253/102; B01D2253/104; B01D2257/00; B01D2257/60; B01D2257/602; B01D2259/00; B01D2259/45; B01D2259/4541; B01D2259/455; C01B2203/00; C01B2203/04; C01B2203/042; C01B2203/0435; C01B2203/0465; C01B2203/0485
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |