US2929794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition comprising polyester-polyisocyanate reaction product and polysulfide polymer
Assignee: Lockheed Martin Corp
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Filing: 1954-09-13
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Granted: 1960-03-22
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Expires: 1974-09-13
Abstract
No abstract record available.
Inventors
- 👤 Simon Eli
- 👤 Frank W Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:44
CPC Classifications
C; C08; C08L; C08L75/00; C08L75/04; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/30; C08G18/302; C08G18/40; C08G18/64; C08G18/6453; C08L81/00; C09; C09J; C09J175/00; C09J175/04; C08L2666/00; C08L2666/02; C08L2666/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
THE RESINOUS MATERIAL WHICH IS THE PRODUCT OF REACTION ON AN APPROXIMATE MOL PERCENTAGE BASIS OF, FROM 1.7 TO 17.5% OF A DIHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF 1,4 BUTANE DIOL, 2 METHYL BUTANE DIOL, 1,4 HEXANE DIOL, 1,3 PROPYLENE GLYCOL, BUTYNE DIOL, AND POLYPROPYLENE GLYCOL HAVING A MOLECULAR WEIGHT RANGE OF 400 TO 10,000, FROM 55 TO 85% OF A POLYISOCYANATE OF THE GENERAL FORMULA SELECTED FROM THE GROUP CONSISTING OF:
Claim 2
Dependent Claim
74 words
THE RESINOUS MATERIAL WHICH IS THE PRODUCT OF REACTION ON AN APPROXIMATE MOL PERCENTAGE BASIS OF, FROM 1.7 TO 17.5% OF A DIHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF 1,4 BUTANE DIOL, 2 METHYL BUTANE DIOL, 1,4 HEXANE DIOL, 1,3 PROPYLENE GLYCOL, BUTYNE DIOL, AND POLYPROPYLENE GLYCOL HAVING A MOLECULAR WEIGHT RANGE OF 400 TO 10,000, FROM 55 TO 85% OF A POLYISOCYANATE OF THE GENERAL FORMULA SELECTED FROM THE GROUP CONSISTING OF:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |