US3531300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for heat treating food sealed within flexible containers
Assignee: Pillsbury Co
•
Filing: 1964-11-17
•
Granted: 1970-09-29
•
Expires: 1984-11-17
Abstract
No abstract record available.
Inventors
- 👤 Sheldon I Greenberg
- 👤 Calvin G Norris
- 👤 Edward L Fritzberg
- 👤 Selwyn Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:05
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/30; A23B2/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1485133A
Cited
US2380134A
Cited
US2472970A
Cited
US2564221A
Cited
US2816841A
Cited
GB809329A
Cited
US3089081A
Cited
US3285710A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |