US2732365A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubbery conjugated diene polymers sta-
Assignee: —
•
Filing: —
•
Granted: 1956-01-24
•
Expires: 1973-01-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:49
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/141; C07F9/145; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/524; C08K5/526
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A RUBBERY CONJUGATED DIENE POLYMERIZATE STABILIZED WITH A SMALL STABILIZING PROPORTION OF A MONOARYL PHOSPHITE OF THE FORMULA ARYL-O-P-(OH)2 IN WHICH ARYL IS A BENZENE NUCLEUS WHICH IS DIRECTLY LINKED TO AT LEAST ONE ALKYL SUBSTITUENT HAVING AT LEAST FOUR CARBON ATOMS.
Claim 2
Dependent Claim
42 words
A RUBBERY CONJUGATED DIENE POLYMERIZATE STABILIZED WITH A SMALL STABILIZING PROPORTION OF A MONOARYL PHOSPHITE OF THE FORMULA ARYL-O-P-(OH)2 IN WHICH ARYL IS A BENZENE NUCLEUS WHICH IS DIRECTLY LINKED TO AT LEAST ONE ALKYL SUBSTITUENT HAVING AT LEAST FOUR CARBON ATOMS.
References Cited (Backward Citations)
US2419354A
Cited
US2508430A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-23 | 1959-07-25 | 1960-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-23 | 1963-07-25 | 1964-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-23 | 1967-07-25 | 1968-01-24 | $7700.00 | Window Closed / Lapsed |