US2833746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylonitrile-isobutylene-styrene interpolymer
Assignee: Ethyl Corp
•
Filing: 1953-12-23
•
Granted: 1958-05-06
•
Expires: 1973-12-23
Abstract
No abstract record available.
Inventors
- 👤 Albert J Haefner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:02
CPC Classifications
C; C08; C08F; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C08F220/00; C08F220/02; C08F220/42; C08F220/44; Y; Y10; Y10S; Y10S526/00; Y10S526/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A TOUGH CLEAR INTERPOLYMER HAVING A HIGH IMPACT STRENGTH CONSISTING ESSENTIALLY OF BETWEEN ABOUT 40-80 PERCENT OF ACRYLONITRILE, BETWEEN ABOUT 5-45 PERCENT BY WEIGHT OF STYRENE, AND BETWEEN ABOUT 5-45 PERCENT BY WEIGHT OF ISOBUTYLENE, SAID POLYMER HAVING A FLEXURAL STRENGTH ABOVE ABOUT 15,000 P.S.I.
Claim 2
Dependent Claim
45 words
A TOUGH CLEAR INTERPOLYMER HAVING A HIGH IMPACT STRENGTH CONSISTING ESSENTIALLY OF BETWEEN ABOUT 40-80 PERCENT OF ACRYLONITRILE, BETWEEN ABOUT 5-45 PERCENT BY WEIGHT OF STYRENE, AND BETWEEN ABOUT 5-45 PERCENT BY WEIGHT OF ISOBUTYLENE, SAID POLYMER HAVING A FLEXURAL STRENGTH ABOVE ABOUT 15,000 P.S.I.
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) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |