US3586659A
Expired / Lapsed
US
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Molding compositions containing inorganic crosslinks
Assignee: Gulf Research and Development Co
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Filing: 1968-05-28
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Granted: 1971-06-22
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Expires: 1988-05-28
Abstract
Abstract MOLDING COMPOSITIONS ARE PROVIDED WHICH ARE CURABLE TO OBJECTS WHICH CONTAIN INORGANIC CROSSLINKS WHICH DO NOT CRACK ON STANDING. THE COMPOSITION CONTAINS A MIXTURE OF A SOLID COMMINUTED COPOLYMER OF AN ALPHA OLEFIN HAVING FROM 3 TO 20 CARBON ATOMS PER MOLECULE AND MALEIC ANHYDRIDE, AND A SOLID COMMINUTED GROUP II-A METAL OXIDE OR HYDROXIDE SUCH AS CAO OR CA (OH)2.
Inventors
- 👤 Russell G Hay
- 👤 William J Heilman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:42
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08F; C08F8/00; C08F8/42; C08F210/00; C08F210/04; C08F210/06; C08F210/14; C08F222/00; C08F222/04; C08F222/06; C08F2810/00; C08F2810/20; Y; Y10; Y10S; Y10S260/00; Y10S260/31; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906
Claims Analysis
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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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |