US3088986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrogenation method
Assignee: Air Products and Chemicals Inc
•
Filing: 1959-06-17
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Granted: 1963-05-07
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Expires: 1979-06-17
Abstract
No abstract record available.
Inventors
- 👤 Donald H Stevenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:12
CPC Classifications
C; C07; C07C; C07C11/00; C07C11/12; C07C11/173; C07C11/18; C07C11/16; C07C11/167; C07C5/00; C07C5/32; C07C5/327; C07C5/333; C07C5/3332; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/901
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) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |