US3454438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gelled nitric acid blasting agent
Assignee: Wyeth Holdings LLC
•
Filing: 1967-12-29
•
Granted: 1969-07-08
•
Expires: 1987-12-29
Abstract
No abstract record available.
Inventors
- 👤 Robert Alan Simpson
- 👤 George Abraham Cross
- 👤 James Paul Rishel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:18
CPC Classifications
C; C06; C06B; C06B31/00; C06B31/28; C06B31/32; C06B47/00; C06B47/14; Y; Y10; Y10S; Y10S149/00; Y10S149/118
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2325065A
Cited
US2355817A
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US3116187A
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US3242019A
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US3216872A
Cited
US3296044A
Cited
US3306789A
Cited
US3361601A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |