US3579366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Granulated additive,method of making the same,and cementitious grout and concrete compositions containing the same
Assignee: Intrusion Prepakt Inc
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Filing: 1968-07-12
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Granted: 1971-05-18
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Expires: 1988-07-12
Abstract
Abstract AS AN ADDITIVE FOR CEMENTITIOUS GROUT AND CONCRETE, A POROUS GRANULE CHARACTERIZED BY A SKELETAL STRUCTURE AND A NETWORK OF INTERSTITIAL VOIDS FORMED BY IN SITU GAS LIBERATION, THE SKELETAL STRUCTURE CONSISTING ESSENTIALLY OF A DISPERSION OF FINELY DIVIDED, SUBSTANTIALLY OXIDE FREE ALUMINUM PARTICLES IN A MATRIX FORMED OF A POWDERED INORGANIC EXTENDER AND A WATER SOLUBLE BINDER WHICH IS INERT WITH RESPECT TO THE ALUMINUM PARTICLES.
Inventors
- 👤 Solomon J Rehmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:42
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B18/00; C04B18/02; C04B18/022; C04B22/00; C04B22/02; C04B22/04; C04B2103/00; C04B2103/0045; C04B2103/0053
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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |