US4321218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphite stabilizer
Assignee: BASF Corp
•
Filing: 1980-04-30
•
Granted: 1982-03-23
•
Expires: 2000-04-30
Abstract
Abstract Tris-(2,4-di-t-octylphenyl)-phosphite is suitable as a stabilizer for organic material.
Inventors
- 👤 Michael Rasberger
- 👤 Helmut Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:46
CPC Classifications
C; C09; C09K; C09K15/00; C09K15/04; C09K15/32; C09K15/322; 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
1 words
Tris-(2,4-di-t-octylphenyl)-phosphite.
Claim 2
Dependent Claim
1 words
Tris-(2,4-di-t-octylphenyl)-phosphite.
References Cited (Backward Citations)
US2058343A
Cited
US2220845A
Cited
US2733226A
Cited
US3231531A
Cited
US3244661A
Cited
US3322718A
Cited
US3373210A
Cited
US3305520A
Cited
US3419523A
Cited
US3558554A
Cited
US3533989A
Cited
US3960758A
Cited
US4187212A
Cited
US4196117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-03-22 | 1985-09-21 | 1986-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-22 | 1989-09-21 | 1990-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-22 | 1993-09-21 | 1994-03-23 | $7700.00 | Window Closed / Lapsed |