Patent US1914193A successfully refreshed from Google Patents.
US3959413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bicyclic phosphites
Assignee: Novartis Corp
•
Filing: 1974-06-27
•
Granted: 1976-05-25
•
Expires: 1994-06-27
Abstract
Abstract Bicyclic phosphites are used alone or in combination with other stabilisers for stabilising polyolefines.
Inventors
- 👤 Kurt Schwarzenbach
- 👤 Bernard Gilg
- 👤 Heimo Brunetti
- 👤 Helmut Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:24
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/527; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6571; C07F9/6574; C07F9/65748
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
60 words
A compound of the formula I, ##EQU23## characterised in that n denotes 1 or 2, Y denotes, if n is equal to 1, alkylamino with 1-18 carbon atoms, cyclohexylamino, benzylamino, anilino, chloroanilino, dichloroanilino, alkylanilino with 7-10 carbon atoms or naphthylamino, or, if n is equal to 2, alkylenediamino with 2-9 carbon atoms, phenylenediamino, toluylenediamino, naphthylenediamino, diphenylmethane-4,4'-diamino or the radical ##EQU24##
Claim 2
Dependent Claim
60 words
A compound of the formula I, ##EQU23## characterised in that n denotes 1 or 2, Y denotes, if n is equal to 1, alkylamino with 1-18 carbon atoms, cyclohexylamino, benzylamino, anilino, chloroanilino, dichloroanilino, alkylanilino with 7-10 carbon atoms or naphthylamino, or, if n is equal to 2, alkylenediamino with 2-9 carbon atoms, phenylenediamino, toluylenediamino, naphthylenediamino, diphenylmethane-4,4'-diamino or the radical ##EQU24##
Claim 3
Dependent Claim
28 words
A compound according to claim 1 of the formula I, characterised in that n denotes 1, Y denotes alkylamino with 1-18 carbon atoms, cyclohexylamino, anilino, chloroanilino or naphthylamino.
Claim 4
Dependent Claim
51 words
A compound according to claim 1 of the formula I, characterised in that n denotes 1 or 2, Y denotes, if n is equal to 1, alkylamino with 1-4 carbon atoms or anilino, or, if n is equal to 2, alkylenediamino with 6-9 carbon atoms, diphenylmethane-4,4'-diamino 2,4-toluenediamino or the radical ##EQU25##
References Cited (Backward Citations)
US3155703A
Cited
US3155705A
Cited
US3168549A
Cited
GB1171474A
Cited
US3607990A
Cited
US3808296A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-25 | 1979-11-24 | 1980-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-25 | 1983-11-24 | 1984-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-25 | 1987-11-24 | 1988-05-25 | $7700.00 | Window Closed / Lapsed |