US2634244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellular plastics having foam stabilizing additives
Assignee: Lockheed Martin Corp
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Filing: 1950-11-09
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Granted: 1953-04-07
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Expires: 1970-11-09
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 15:55
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C08J9/0028; C08J2375/00; C08J2375/04; C08J2375/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A FOAMED CELLULAR PLASTIC MATERIAL COMPRISING THE REACTION PRODUCT OF AN ALKYD RESIN HAVING A WATER CONTENT OF FROM 0.1 TO 3% BY WEIGHT. HAVING AN ACID NUMBER OF FROM 5 TO 175 AND WHEREIN THE RATIO RANGE OF THE HYDROXYL GROUPS TO THE CARBOXYL GROUPS IN THE ALKYD RESIN REACTANTS IS FROM 3(OH) :1(COOH) TO 4(OH) TO 5(COOH); FROM 35 TO 150 PARTS BY WEIGHT OF META-TOLUENE DIISOCYANATE FOR EACH 100 PARTS BY WEIGHT OF SAID RESIN; AND FROM 1.5 TO 15 PARTS BY WEIGHT OF A QUATERNARY AMMONIUM SALT OF BENTONITE HAVING FROM 26 TO 38 TOTAL CARBON ATOMS, FOR EACH 100 PARTS BY WEIGHT OF SAID RESIN
Claim 2
Dependent Claim
110 words
A FOAMED CELLULAR PLASTIC MATERIAL COMPRISING THE REACTION PRODUCT OF AN ALKYD RESIN HAVING A WATER CONTENT OF FROM 0.1 TO 3% BY WEIGHT. HAVING AN ACID NUMBER OF FROM 5 TO 175 AND WHEREIN THE RATIO RANGE OF THE HYDROXYL GROUPS TO THE CARBOXYL GROUPS IN THE ALKYD RESIN REACTANTS IS FROM 3(OH) :1(COOH) TO 4(OH) TO 5(COOH); FROM 35 TO 150 PARTS BY WEIGHT OF META-TOLUENE DIISOCYANATE FOR EACH 100 PARTS BY WEIGHT OF SAID RESIN; AND FROM 1.5 TO 15 PARTS BY WEIGHT OF A QUATERNARY AMMONIUM SALT OF BENTONITE HAVING FROM 26 TO 38 TOTAL CARBON ATOMS, FOR EACH 100 PARTS BY WEIGHT OF SAID RESIN
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |