US2581058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coatings for insulation board
Assignee: United States Gypsum Co
•
Filing: 1947-07-21
•
Granted: 1952-01-01
•
Expires: 1967-07-21
Abstract
No abstract record available.
Inventors
- 👤 John K Wise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:43
CPC Classifications
C; C09; C09D; C09D103/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A COATING COMPOSITION SUITABLE FOR APPLICATION TO WET INSULATING BOARD COMPRISING AN AQUEOUS GELATINIZED STARCH VEHICLE AND AN ESTER OF A FATTY ACID, HAVING FROM 12 TO 24 CARBON ATOMS, AND A POLYETHYLENE GLYCOL HAVING A MOLECULAR WEIGHT OF FROM ABOUT 300 TO 4000.
Claim 2
Dependent Claim
44 words
A COATING COMPOSITION SUITABLE FOR APPLICATION TO WET INSULATING BOARD COMPRISING AN AQUEOUS GELATINIZED STARCH VEHICLE AND AN ESTER OF A FATTY ACID, HAVING FROM 12 TO 24 CARBON ATOMS, AND A POLYETHYLENE GLYCOL HAVING A MOLECULAR WEIGHT OF FROM ABOUT 300 TO 4000.
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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) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |