Patent US1359098A successfully refreshed from Google Patents.
US2839416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acid-proof water-glass cements capable of swelling
Assignee: Hoechst AG
•
Filing: 1955-10-26
•
Granted: 1958-06-17
•
Expires: 1975-10-26
Abstract
No abstract record available.
Inventors
- 👤 Dietz Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:55
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/24; C04B28/26; C04B24/00; C04B24/12; C04B24/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
ALKALI WATER-GLASS COMPOSITION CAPABLE OF SWELLING AND CONSISTING ESSENTIALLY OF ALKALI WATER-GLASS AND AT LEAST ONE CYANAMIDE OF A BIVALENT METAL IN AN AMOUNT RANGING FROM 0.1 TO 10 PERCENT, CALCULATED ON THE WEIGHT OF THE SOLID COMPONENTS OF SAID COMPOSITIONS.
Claim 2
Dependent Claim
41 words
ALKALI WATER-GLASS COMPOSITION CAPABLE OF SWELLING AND CONSISTING ESSENTIALLY OF ALKALI WATER-GLASS AND AT LEAST ONE CYANAMIDE OF A BIVALENT METAL IN AN AMOUNT RANGING FROM 0.1 TO 10 PERCENT, CALCULATED ON THE WEIGHT OF THE SOLID COMPONENTS OF SAID COMPOSITIONS.
References Cited (Backward Citations)
GB464638A
Cited
US2449346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |