US3431655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Freeze drying
Assignee: Struthers Scient & Intern Corp
•
Filing: 1967-06-13
•
Granted: 1969-03-11
•
Expires: 1987-06-13
Abstract
No abstract record available.
Inventors
- 👤 Kenneth M Grover
- 👤 Neophytos Ganiaris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:46
CPC Classifications
F; F26; F26B; F26B5/00; F26B5/04; F26B5/06; F26B5/065; A; A23; A23B; A23B2/00; A23B2/90; A23B2/92; A23F; A23F5/00; A23F5/24; A23F5/28; A23F5/32; Y; Y10; Y10S; Y10S159/00; Y10S159/05
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2471035A
Cited
US2751687A
Cited
US2813350A
Cited
GB952920A
Cited
US3162019A
Cited
US3243892A
Cited
US3313032A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |