US2978440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-static vinyl chloride copolymer containing salts of dialkyl phosphates
Assignee: Union Carbide Corp
•
Filing: 1955-11-29
•
Granted: 1961-04-04
•
Expires: 1975-11-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Warren J Frissell
- 👤 Vladimir J Houska
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:05
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/521; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A HOMOGENEOUS COMPOSITION OF MATTER CHARACTERIZED BY LITTLE TENDENCY TO ACQUIRE AND RETAIN A STATIC CHARGE, SAID COMPOSITION COMPRISING A COPOLYMER OF VINYL CHLORIDE AND VINYL ACETATE, IN WHICH AT LEAST ABOUT 10% BY WEIGHT OF SAID COPOLYMER CONSISTS OF VINYL CHLORIDE, IN ADMIXTURE WITH FROM ABOUT 0.25 TO ABOUT 15 PARTS BY WEIGHT, PER 100 PARTS BY WEIGHT OF SAID COPOLYMER, OF AN ALKALI METAL SALT OF A DIALKYL PHOSPHATE WHEREIN EACH OF THE ALKYL GROUPS CONTAINS FROM 4 TO ABOUT 12 CARBON ATOMS.
Claim 2
Dependent Claim
85 words
A HOMOGENEOUS COMPOSITION OF MATTER CHARACTERIZED BY LITTLE TENDENCY TO ACQUIRE AND RETAIN A STATIC CHARGE, SAID COMPOSITION COMPRISING A COPOLYMER OF VINYL CHLORIDE AND VINYL ACETATE, IN WHICH AT LEAST ABOUT 10% BY WEIGHT OF SAID COPOLYMER CONSISTS OF VINYL CHLORIDE, IN ADMIXTURE WITH FROM ABOUT 0.25 TO ABOUT 15 PARTS BY WEIGHT, PER 100 PARTS BY WEIGHT OF SAID COPOLYMER, OF AN ALKALI METAL SALT OF A DIALKYL PHOSPHATE WHEREIN EACH OF THE ALKYL GROUPS CONTAINS FROM 4 TO ABOUT 12 CARBON ATOMS.
References Cited (Backward Citations)
US2393863A
Cited
US2381020A
Cited
US2498408A
Cited
US2514191A
Cited
GB700356A
Cited
US2674593A
Cited
US2723246A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |