Patent US3901931A successfully refreshed from Google Patents.
US3901931A
Expired / Lapsed
US
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Nickel stabilisers for synthetic polymers
Assignee: Novartis Corp
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Filing: 1973-06-14
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Granted: 1975-08-26
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Expires: 1993-06-14
Abstract
Abstract New complexes of nickel salts of hydroxybenzoic acids are stabilizers for polymers. The complexes are prepared by reacting a nickel benzoate with a corresponding alkohol.
Inventors
- 👤 Michael Rasberger
- 👤 Johann Rody
- 👤 Paul Moser
- 👤 Helmut Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:27
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0091; C07; C07F; C07F15/00; C07F15/04; C07F15/045
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
4 words
COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
4 words
COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
4 words
Compound of the formula
Claim 4
Dependent Claim
4 words
Compound of the formula
Claim 5
Dependent Claim
4 words
Compound of the formula
Claim 6
Dependent Claim
4 words
Compound of the formula
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |