US3464490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Formation nuclear fracturing process
Assignee: Pan American Petroleum Corp
•
Filing: 1965-08-30
•
Granted: 1969-09-02
•
Expires: 1985-08-30
Abstract
No abstract record available.
Inventors
- 👤 Daniel Silverman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:42
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/30; E21B43/25; E21B43/26; E21B43/263; E21B43/2635
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2584605A
Cited
US2779735A
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US2966346A
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US3113620A
Cited
US3233670A
Cited
FR1278435A
Cited
US3303881A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |