US3536480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming inorganic foam materials
Assignee: GFC FOAM Corp A CORP OF DE
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Filing: 1967-01-12
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Granted: 1970-10-27
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Expires: 1987-01-12
Abstract
No abstract record available.
Inventors
- 👤 Joseph Winkler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:50
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/10; B22F3/11; B22F3/114; B01; B01D; B01D39/00; B01D39/14; B01D39/20; B01D39/2027; B01D39/2051; B01D39/2068; B01D39/2093; C; C04; C04B; C04B38/00; C04B38/06; C04B38/0615; B01D2239/00; B01D2239/04; B01D2239/0471; B22F2998/00; B22F2998/10; Y; Y10; Y10S; Y10S55/00; Y10S55/05; Y10S55/13; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/24999; Y10T428/31504; Y10T428/31551; Y10T428/31605
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |