US3417108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of dicarboxylic acid anhydrides by catalytic oxidation
Assignee: Honeywell International Inc
•
Filing: 1965-08-25
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Granted: 1968-12-17
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Expires: 1985-08-25
Abstract
No abstract record available.
Inventors
- 👤 Walter J Stefaniak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:14
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/31; C07C51/313; B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/66; B01J23/68; B01J23/683; B01J23/686; B01J27/00; B01J27/14; B01J27/186; B01J27/195; B01J27/198; C07C51/21; C07C51/255; C07C51/265
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2773921A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |