Patent US3361535A successfully refreshed from Google Patents.
US3361535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for production of high purity hydrogen
Assignee: Universal Oil Products Co
•
Filing: 1964-01-29
•
Granted: 1968-01-02
•
Expires: 1984-01-29
Abstract
No abstract record available.
Inventors
- 👤 Ernest L Pollitzer
- 👤 Haensel Vladimir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:52
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/50; C01B2203/00; C01B2203/04; C01B2203/0465; C01B2203/048; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/93; Y10S585/934
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2882243A
Cited
US2799640A
Cited
US3057689A
Cited
US3120431A
Cited
US3188179A
Cited
US3251652A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |