US3479298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of hydrogen
Assignee: Lummus Technology LLC
•
Filing: 1964-08-04
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Granted: 1969-11-18
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Expires: 1984-08-04
Abstract
No abstract record available.
Inventors
- 👤 Morgan C Sze
- 👤 Donald B Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:03
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/386; C01B2203/00; C01B2203/02; C01B2203/0205; C01B2203/0227; C01B2203/0233; C01B2203/0244; C01B2203/08; C01B2203/0805; C01B2203/0811; C01B2203/0816; C01B2203/0838; C01B2203/0844; C01B2203/0866; C01B2203/12; C01B2203/1205; C01B2203/1211; C01B2203/1235; C01B2203/1241; C01B2203/14; C01B2203/142; C01B2203/143; C01B2203/80; C01B2203/82
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) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |