US2695850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic composition
Assignee: Individual
•
Filing: 1950-07-31
•
Granted: 1954-11-30
•
Expires: 1970-07-31
Abstract
No abstract record available.
Inventors
- 👤 Lorenz John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:57
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/24; C04B28/26
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
51 words
A MOLDED STONE-LIKE PRODUCT COMPRISING A WATERHARDENED WHITE PORTLAND CEMENT CONTAINING AN ADDITION CONSISTING OF ABOUT 15 TO 45 GRAINS OF SODIUM METASILICATE MIXED WITH A MEMBER OF THE GROUP CONSISTING OF SODIUM HYDROXIDE, SODIUM CARBONATE, AND SODIUM BICARBONATE, TO 3 OUNCES OF THE CEMENT, THE PRODUCT BEING IN NONNEUTRALIZED CONDITION.
References Cited (Backward Citations)
GB614377A
Cited
US1468029A
Cited
US1861317A
Cited
US1970921A
Cited
US2187668A
Cited
US2215812A
Cited
GB620500A
Cited
US2522707A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-29 | 1958-05-31 | 1958-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-29 | 1962-05-31 | 1962-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-29 | 1966-05-31 | 1966-11-30 | $7700.00 | Window Closed / Lapsed |