Patent US2877209A successfully refreshed from Google Patents.
US2877209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tertiary-alkylated bis-hydroxy phenyl propane deterioration retarders for rubber
Assignee: Goodrich Corp
•
Filing: 1953-08-04
•
Granted: 1959-03-10
•
Expires: 1973-08-04
Abstract
No abstract record available.
Inventors
- 👤 Jacob E Jansen
- 👤 Henry J Kehe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:20
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/11; C07C37/14; C08; C08K; C08K5/00; C08K5/04; C08K5/13; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
7. A RUBBERY COMPOSITION COMPRISING AN UNSATURATED RUBBERY DIOLEFINIC POLYMER SELECTED FROM THE CLASS CONSISTING OF A POLYMER OF A CONJUGATED DIOLEFIN AND A COPOLYMER OF A CONJUGATED DIOLEFIN WITH A MONOOLEFIN, THROUGH WHICH UNSATURATED DIOLEFNIC POLYMER IS DISPERSED FROM ABOUT 0.1 TO ABOUT 10 WEIGHT PERCENT BASED ON THE WEIGHT OF THE UNSATURATED RUBBERY DIOLEFINIC POLYMER OF A DETERIORATION RETARDER SELECTED FROM THE CLASS CONSISTING OF 2.2-BIS(3,5-T-BUTYL-4-''YDROXYPHENYL) PROPANE AND 2,2BIS(3,5-T-DI-SOBUTYL-4-HYDROXYPHENYL) PROPANE.
Claim 2
Dependent Claim
72 words
7. A RUBBERY COMPOSITION COMPRISING AN UNSATURATED RUBBERY DIOLEFINIC POLYMER SELECTED FROM THE CLASS CONSISTING OF A POLYMER OF A CONJUGATED DIOLEFIN AND A COPOLYMER OF A CONJUGATED DIOLEFIN WITH A MONOOLEFIN, THROUGH WHICH UNSATURATED DIOLEFNIC POLYMER IS DISPERSED FROM ABOUT 0.1 TO ABOUT 10 WEIGHT PERCENT BASED ON THE WEIGHT OF THE UNSATURATED RUBBERY DIOLEFINIC POLYMER OF A DETERIORATION RETARDER SELECTED FROM THE CLASS CONSISTING OF 2.2-BIS(3,5-T-BUTYL-4-''YDROXYPHENYL) PROPANE AND 2,2BIS(3,5-T-DI-SOBUTYL-4-HYDROXYPHENYL) PROPANE.
References Cited (Backward Citations)
US2628212A
Cited
US2670340A
Cited
US2688597A
Cited
US2745726A
Cited
US2731442A
Cited
US2734088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |