Patent US2610130A successfully refreshed from Google Patents.
US2610130A
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Water-repelient gypsum product
Assignee: Kaiser Gypsum Co Inc
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Filing: 1950-07-10
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Granted: 1952-09-09
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Expires: 1970-07-10
Abstract
No abstract record available.
Inventors
- 👤 Wallace C Riddell
- 👤 George B Kirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:59
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/14; C04B2111/00; C04B2111/20; C04B2111/27
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
WATER-REPELLENT GYPSUM PRODUCT COMPRISING A SET MASS OF GYPSUM CRYSTALS PROTECTIVELY COATED WITH FROM 0.5% TO 2.0% BY WEIGHT OF UNI-
Claim 2
Dependent Claim
21 words
WATER-REPELLENT GYPSUM PRODUCT COMPRISING A SET MASS OF GYPSUM CRYSTALS PROTECTIVELY COATED WITH FROM 0.5% TO 2.0% BY WEIGHT OF UNI-
References Cited (Backward Citations)
US1287453A
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US1923383A
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US2198776A
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US2432963A
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US2483806A
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US2526538A
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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) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |