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US3147064A
Expired / Lapsed
US
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Fluorinated ethers and derivatives
Assignee: 3M Co
•
Filing: 1959-02-02
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Granted: 1964-09-01
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Expires: 1979-02-02
Abstract
No abstract record available.
Inventors
- 👤 Harvey A Brown
- 👤 Robert J Koshar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:29
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07D213/20; B; B23; B23Q; B23Q3/00; B23Q3/02; B23Q3/06; B23Q3/08; D; D06; D06M; D06M13/00; D06M13/322; D06M13/402; D06M13/438; B23Q2703/00; B23Q2703/02; B23Q2703/04; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2164; Y10T442/2172; Y10T442/2279; Y10T442/2287
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 3
Dependent Claim
25 words
THE PROCESS FOR RENDERING FIBROUS MATERIALS WATERAND OIL-REPELLENT, WHICH COMPRISES TREATING THE FIBROUS MATERIAL WITH A QUATERNARY AMINE SALT OF A COMPOUND OF THE FORMULA:
Claim 4
Dependent Claim
25 words
THE PROCESS FOR RENDERING FIBROUS MATERIALS WATERAND OIL-REPELLENT, WHICH COMPRISES TREATING THE FIBROUS MATERIAL WITH A QUATERNARY AMINE SALT OF A COMPOUND OF THE FORMULA:
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |