Patent US2580050A successfully refreshed from Google Patents.
US2580050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tough styrene-olefin copolymers containing two to ten per cent of wax
Assignee: Standard Oil Development Co
•
Filing: 1944-10-06
•
Granted: 1951-12-25
•
Expires: 1964-10-06
Abstract
No abstract record available.
Inventors
- 👤 William J Sparks
- 👤 Paul E Hardy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:52
CPC Classifications
C; C08; C08F; C08F210/00; C08F210/04; C08F210/08; C08F210/10; B; B29; B29C; B29C48/00; B29C48/15; B32; B32B; B32B27/00; C08J; C08J5/00; C08J5/12; C08J5/124; C08J5/18; C08L; C08L23/00; C08L23/02; C08L23/18; C08L23/20; C08L23/22; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; H01B3/442; B29C48/03; B29C48/07; B29C48/08; C08J2323/00; C08J2323/02; C08J2323/18; C08J2323/20; C08J2323/22; C08J2325/00; C08J2325/02; C08J2325/04; C08J2325/08; C08L91/00; C08L91/06; Y; Y10; Y10T; Y10T428/00; Y10T428/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
AN ARTICLE COMPRISING A SELF-SUSTAINING FILM CONSISTING ESSENTIALLY OF 2% TO 10% BY WEIGHT OF A MICROCRYSTALLINE PETROLEUM WAX AND THE REMAINDER A COPOLYMER OF A STYRENE AND ISOBUTYLENE, SAID COPOLYMER HAVING AN INTRINSIC VISCOSITY IN THE RANGE OF APPROXIMATELY 0.6 TO 3.0 AND CONTAINING ABOUT 50% TO 60% BY WEIGHT OF COMBINED STYRENE.
Claim 2
Dependent Claim
54 words
AN ARTICLE COMPRISING A SELF-SUSTAINING FILM CONSISTING ESSENTIALLY OF 2% TO 10% BY WEIGHT OF A MICROCRYSTALLINE PETROLEUM WAX AND THE REMAINDER A COPOLYMER OF A STYRENE AND ISOBUTYLENE, SAID COPOLYMER HAVING AN INTRINSIC VISCOSITY IN THE RANGE OF APPROXIMATELY 0.6 TO 3.0 AND CONTAINING ABOUT 50% TO 60% BY WEIGHT OF COMBINED STYRENE.
References Cited (Backward Citations)
US2274749A
Cited
US2345717A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |