US3342637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized polypropylene coated copper and method
Assignee: Shell USA Inc
•
Filing: 1963-12-31
•
Granted: 1967-09-19
•
Expires: 1983-12-31
Abstract
No abstract record available.
Inventors
- 👤 Gunter S Jaffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:25
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A METHOD OF COATING COPPER ARTICLES WHICH COMPRISES COATING SAID COPPER ARTICLES WITH A COMPOSITION COMPRISING ISOTACTIC POLYPROPYLENE AND FROM ABOUT 0.01% TO ABOUT 10% BY WEIGHT WITH REFERENCE TO THE POLYPROPYLENE OF A STERICALLY-HINDERED PHENOL OF THE FORMULA TRI(R1-),(HO-(2,6-DI(R-)-1,4-PHENYLENE)-CH2)3-BENZENE WHEREIN R AND R1 ARE ALKYL RADICLS OF FROM 3 TO 10 CARBON ATOMS, CHARACTERIZED IN THAT AT LEAST ONE OF THE R''S ATTACHED ADJACENT TO THE HYDROXY GROUPS IS A BRANCHEDCHAIN ALKYL RADICL BRANCHED ON THE ALPHA CARBON ATOM.
Claim 2
Independent Claim
80 words
A METHOD OF COATING COPPER ARTICLES WHICH COMPRISES COATING SAID COPPER ARTICLES WITH A COMPOSITION COMPRISING ISOTACTIC POLYPROPYLENE AND FROM ABOUT 0.01% TO ABOUT 10% BY WEIGHT WITH REFERENCE TO THE POLYPROPYLENE OF A STERICALLY-HINDERED PHENOL OF THE FORMULA TRI(R1-),(HO-(2,6-DI(R-)-1,4-PHENYLENE)-CH2)3-BENZENE WHEREIN R AND R1 ARE ALKYL RADICLS OF FROM 3 TO 10 CARBON ATOMS, CHARACTERIZED IN THAT AT LEAST ONE OF THE R''S ATTACHED ADJACENT TO THE HYDROXY GROUPS IS A BRANCHEDCHAIN ALKYL RADICL BRANCHED ON THE ALPHA CARBON ATOM.
References Cited (Backward Citations)
US3110696A
Cited
US3296188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |