Patent US3547856A successfully refreshed from Google Patents.
US3547856A
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US
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Fluorinated oil and water repellents
Assignee: EIDP Inc
•
Filing: 1969-03-11
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Granted: 1970-12-15
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Expires: 1989-03-11
Abstract
No abstract record available.
Inventors
- 👤 Thomas K Tandy Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:22
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/277; C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/22; C08F220/24; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31855; Y10T428/31935; Y10T428/8305; Y10T442/00; Y10T442/20; Y10T442/2164; Y10T442/2172
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2991277A
Cited
US3102103A
Cited
US3282905A
Cited
US3378609A
Cited
US3459696A
Cited
US3347812A
Cited
US3384627A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |