Patent DE2065710A1 successfully refreshed from Google Patents.
US2562118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polytetrafluoroethylene coating compositions
Assignee: EIDP Inc
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Filing: 1950-02-09
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Granted: 1951-07-24
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Expires: 1970-02-09
Abstract
No abstract record available.
Inventors
- 👤 Osdal Le Verne Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:23
CPC Classifications
C; C09; C09D; C09D127/00; C09D127/02; C09D127/12; C09D127/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A COATING COMPOSITION COMPRISING, AS ITS ESSENTIAL CONSTITUENTS, AN AQUEOUS SUSPENSOID OF A POLYMER OF TETRAFLUOROETHYLENE AND 1-90% OF ACID, BASED ON THE COMBINED WEIGHT OF POLYMER AND ACID, SAID ACID CONSISTING OF CHROMIC ACID AND PHOSPHORIC ACID IN A RATIO OF BETWEEN 10:90 PARTS AND 90:10 PARTS.
Claim 2
Dependent Claim
48 words
A COATING COMPOSITION COMPRISING, AS ITS ESSENTIAL CONSTITUENTS, AN AQUEOUS SUSPENSOID OF A POLYMER OF TETRAFLUOROETHYLENE AND 1-90% OF ACID, BASED ON THE COMBINED WEIGHT OF POLYMER AND ACID, SAID ACID CONSISTING OF CHROMIC ACID AND PHOSPHORIC ACID IN A RATIO OF BETWEEN 10:90 PARTS AND 90:10 PARTS.
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) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |