US3397962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for hydrogen or ammonia synthesis gas
Assignee: Individual
•
Filing: 1965-02-16
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Granted: 1968-08-20
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Expires: 1985-02-16
Abstract
No abstract record available.
Inventors
- 👤 Arthur M Squires
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:47
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/384; B; B01; B01J; B01J8/00; B01J8/02; B01J8/04; B01J8/0446; B01J8/0449; B01J8/0453; B01J8/0496; B01J8/06; B01J8/067; C01B3/025; C01B3/48; C01B2203/00; C01B2203/02; C01B2203/0205; C01B2203/0227; C01B2203/0233; C01B2203/0244; C01B2203/0283; C01B2203/0294; C01B2203/04; C01B2203/042; C01B2203/0425; C01B2203/0465; C01B2203/0475; C01B2203/0495; C01B2203/06; C01B2203/068; C01B2203/08; C01B2203/0805; C01B2203/0838; C01B2203/0844; C01B2203/10; C01B2203/1005; C01B2203/1011; C01B2203/1041; C01B2203/1047; C01B2203/1052; C01B2203/12; C01B2203/1205; C01B2203/1211; C01B2203/1235; C01B2203/1241; C01B2203/14; C01B2203/142; C01B2203/143; C01B2203/146; C01B2203/147; C01B2203/16; C01B2203/1614; C01B2203/80; C01B2203/82; C01B2203/84
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US989955A
Cited
USRE19733E
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US2625470A
Cited
US2682455A
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US3094391A
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US3115394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |