US3019211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of phenylene di-tertiary amines in rubber
Assignee: Bridgestone Firestone Inc
•
Filing: 1958-12-05
•
Granted: 1962-01-30
•
Expires: 1978-12-05
Abstract
No abstract record available.
Inventors
- 👤 Harry E Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:42
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
CROSSLINKED BUTADIENE-STYRENE RUBBER CONTAINING AN ANTIOZONANT AMOUNT OF N,N''-DIALKYL-N,N''-DI-SEC-BUTYL-P HENYLENEDIAMINE OF THE CLASS CONSISTING OF N,N''-DIMETHYL-N,N''-DI-SEC-BUTYL-P-PHENYLENEDIAMINE AND N,N''-DI-NBUTYL-N,N''-DI-SEC-BUTYL-P-PHENYLENEDIAMINE, SAID RUBBER CONTAINING AT LEAST 50 PERCENT OF BUTADIENE.
Claim 2
Dependent Claim
27 words
CROSSLINKED BUTADIENE-STYRENE RUBBER CONTAINING AN ANTIOZONANT AMOUNT OF N,N''-DIALKYL-N,N''-DI-SEC-BUTYL-P HENYLENEDIAMINE OF THE CLASS CONSISTING OF N,N''-DIMETHYL-N,N''-DI-SEC-BUTYL-P-PHENYLENEDIAMINE AND N,N''-DI-NBUTYL-N,N''-DI-SEC-BUTYL-P-PHENYLENEDIAMINE, SAID RUBBER CONTAINING AT LEAST 50 PERCENT OF BUTADIENE.
References Cited (Backward Citations)
US2129135A
Cited
US2883362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-29 | 1965-07-31 | 1966-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-29 | 1969-07-31 | 1970-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-29 | 1973-07-31 | 1974-01-30 | $7700.00 | Window Closed / Lapsed |