US3795631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass-fiber-reinforced zeolite granulates
Assignee: Bayer AG
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Filing: 1971-05-05
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Granted: 1974-03-05
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Expires: 1991-05-05
Abstract
Abstract GLASS FIBERS IN THE AMOUNT OF ABOUT 0.3 TO 10% BY WEIGHT OF SOLIDS ARE INCLUDED IN A SUSPENSION OF ZEOLITE AND ARMOPHOUS BINDER, SUCH AS SILICA SOL, WHICH IS GELLED AND CONVERTED INTO GRANULATES IN KNOWN MANNER. IF THE NATURE OF THE BINDER PERMITS, IT CAN BE CONVERTED TO ZEOLITE IN THE GRANULATES, AS BY TREATMENT WITH SODIUM ALUMINATE, SO THAT THE GRANULATES COMPRISES ONLY ZEOLITE AND GLASS FIBER. THE NOVEL ZEOLITE GRANULATES SHRINK LESS DURING DRYING AND ARE CHARACTERIZED BY HIGH IMPACT STRENGTH AND BY RESISTANCE TO BREAKING UNDER FLUCTUATING THERMAL STRESSES.
Inventors
- 👤 G Heinze
- 👤 G Reiss
- 👤 F Schwochow
- 👤 G Ulisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:28
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; C; C01; C01B; C01B33/00; C01B33/20; C01B33/26; C01B33/28; C01B33/2807; C01B33/2815
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) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |