US3377193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion-resistant coating composition of zinc and fluorocarbon resin and ferrous metal article coated therewith
Assignee: EIDP Inc
•
Filing: 1964-12-10
•
Granted: 1968-04-09
•
Expires: 1984-12-10
Abstract
No abstract record available.
Inventors
- 👤 Frederic B Stilmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:40
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/08; C09D5/10; C09D5/106; C09D127/00; C09D127/02; C09D127/12; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12104; Y10T428/12111; Y10T428/12125; Y10T428/12389; Y10T428/12396; Y10T428/12493; Y10T428/12771; Y10T428/12785; Y10T428/12792; Y10T428/12799; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
67 words
A CORROSION-RESISTANT COATING COMPOSITION FOR FERROUS METALS COMPRISING FROM ABOUT 20% TO 90% BY VOLUME OF FINELY DIVIDED ZINC METAL DISPERSED IN A FLUOROCARBON POLYMER, SAID POLYMER BEING CHARACTERIZED BY HAVING A FLUORINE CONTENT OF AT LEAST 30% BY WEIGHT, A STICKING TEMPERATURE GREATER THAN 60*C., A GLASS TRANSITION TEMPERATURE OF LEASS THAN 105*C., AND A MELT FLOW RATE OF GREATER THAN 0.5 G./10 MINUTES AT 195*C.
Claim 2
Dependent Claim
67 words
A CORROSION-RESISTANT COATING COMPOSITION FOR FERROUS METALS COMPRISING FROM ABOUT 20% TO 90% BY VOLUME OF FINELY DIVIDED ZINC METAL DISPERSED IN A FLUOROCARBON POLYMER, SAID POLYMER BEING CHARACTERIZED BY HAVING A FLUORINE CONTENT OF AT LEAST 30% BY WEIGHT, A STICKING TEMPERATURE GREATER THAN 60*C., A GLASS TRANSITION TEMPERATURE OF LEASS THAN 105*C., AND A MELT FLOW RATE OF GREATER THAN 0.5 G./10 MINUTES AT 195*C.
Claim 3
Dependent Claim
87 words
AN ARTICLE OF MANUFACTURE COMPRISING A FERROUS METAL SUBSTRATE AND ADHERED THERETO OVER AT LEAST A PORTION OF SAID SUBSTRATE A COATING LAYER OF THE CORROSIONRESISTANT COATING COMPOSITON OF CLAIM 1 AND OVERLAID AND ADHERED TO SAID CORROSION-RESISTANT COATING A ZINC-FREE FLUOROCARBON POLYMER TOPCOATING COMPOSIITION, SAID POLYMER BEING CHARACTERIZED BY HVING A FLUORINE CONTENT OF AT LEAST 30% BY WEIGHT, A STICKING TEMPERATURE GREATER THAN 60*C., A GLASS TRANSITION TEMPERATRUE OF LESS THAN 105*C., AND A MELT FLOW RATE OF GREATER THAN 0.2 G./10 MINUTES AT 195*C.
References Cited (Backward Citations)
US2462763A
Cited
US2419009A
Cited
US2468054A
Cited
US3019206A
Cited
US3105056A
Cited
US3111426A
Cited
US3277419A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |