US2078951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regenerative contact mass
Assignee: Houdry Process Corp
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Filing: 1935-08-07
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Granted: 1937-05-04
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Expires: 1955-08-07
Abstract
No abstract record available.
Inventors
- 👤 Eugene J Houdry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:54
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; B; B01; B01J; B01J21/00; B01J21/20; B01J37/00; B01J37/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-05-03 | 1940-11-02 | 1941-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-05-03 | 1944-11-02 | 1945-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-05-03 | 1948-11-02 | 1949-05-04 | $7700.00 | Window Closed / Lapsed |