US3535273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating cellular foam resins
Assignee: Filfast Corp
•
Filing: 1967-09-19
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Granted: 1970-10-20
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Expires: 1987-09-19
Abstract
No abstract record available.
Inventors
- 👤 William H Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:04
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/36; C08J9/38; B; B29; B29C; B29C44/00; B29C44/34; B29C44/56; B29C44/5609; C08J2361/00; C08J2361/20; C08J2361/22; C08J2361/24; Y; Y10; Y10S; Y10S264/00; Y10S264/02; Y10S521/00; Y10S521/918
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |