US3069278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cement composition
Assignee: Aerojet Rocketdyne Inc
•
Filing: 1957-08-19
•
Granted: 1962-12-18
•
Expires: 1977-08-19
Abstract
No abstract record available.
Inventors
- 👤 Robert F Kimpel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:25
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/97; F02K9/974; C; C04; C04B; C04B28/00; C04B28/14; C04B2103/00; C04B2103/20; C04B2103/22; Y; Y10; Y10S; Y10S106/00; Y10S106/01; Y10S106/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A CEMENT COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF FROM ABOUT 30 TO ABOUT 40 PERCENT PLASTER OF PARIS; ABOUT 15 TO ABOUT 30 PERCENT FINELY DIVIDED ALUMINUM OXIDE; ABOUT 5 TO ABOUT 10 PERCENT DIATOMACCEOUS
Claim 2
Dependent Claim
36 words
A CEMENT COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF FROM ABOUT 30 TO ABOUT 40 PERCENT PLASTER OF PARIS; ABOUT 15 TO ABOUT 30 PERCENT FINELY DIVIDED ALUMINUM OXIDE; ABOUT 5 TO ABOUT 10 PERCENT DIATOMACCEOUS
References Cited (Backward Citations)
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US2113375A
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US2314626A
Cited
US2501699A
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |