US3737399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer foams
Assignee: International Synthetic Rubber Co Ltd
•
Filing: 1972-02-14
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Granted: 1973-06-05
•
Expires: 1992-02-14
Abstract
Abstract A PROCESS FOR THE PREPARATION OF A SOLID FORMED POLYMER FROM A HYDROGEN-PEROXIDE-MODIFIED POLYMER DISPERSION COMPRISING FORMING THE DISPERSION AND DRYING THE FORMED DISPERSION DURING OR AFTER CROSS-LINKING THEREOF CHARACTERIZED IN THAT HYDRAZINE IS ADDED TO THE DISPERSION PRIOR TO OR DURING THE FORMING THEREOF.
Inventors
- 👤 J Locke
- 👤 D Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:19
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0066; C08J9/30; C08J9/36; Y; Y10; Y10S; Y10S521/00; Y10S521/915
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |