US3301807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized, concentrated polytetrafluoroethylene dispersions containing non-ionic surfactants
Assignee: Zeneca Inc
•
Filing: 1964-04-07
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Granted: 1967-01-31
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Expires: 1984-04-07
Abstract
No abstract record available.
Inventors
- 👤 Hoashi Juzaemon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:43
CPC Classifications
C; C08; C08F; C08F6/00; C08F6/14; C08F6/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A PROCESS FOR PRODUCING STABILIZED, CONCENTRATED POLYTETRAFLUOROETHYLENE DISPERSIONS CONSISTING ESSENTIALLY OF SEQUENTIALLY (A) THOROUGHLY MIXING FROM ABOUT 6 TO ABOUT 20 PERCENT BY WEIGHT OF A CONCENTRATING NONIONIC SURFACTANT HAVING A STRUCTURE REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
36 words
A PROCESS FOR PRODUCING STABILIZED, CONCENTRATED POLYTETRAFLUOROETHYLENE DISPERSIONS CONSISTING ESSENTIALLY OF SEQUENTIALLY (A) THOROUGHLY MIXING FROM ABOUT 6 TO ABOUT 20 PERCENT BY WEIGHT OF A CONCENTRATING NONIONIC SURFACTANT HAVING A STRUCTURE REPRESENTED BY THE FORMULA
References Cited (Backward Citations)
US3037953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |