Patent US2360976A successfully refreshed from Google Patents.
Patent US3015604A successfully refreshed from Google Patents.
US3015604A
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Porous polytetrafluoroethylene article containing glass microballoons
Assignee: EIDP Inc
•
Filing: 1957-05-02
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Granted: 1962-01-02
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Expires: 1977-05-02
Abstract
No abstract record available.
Inventors
- 👤 Hochberg Jerome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:39
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/32; B; B01; B01D; B01D39/00; B01D39/14; D; D21; D21H; D21H5/00; D21H5/12; D21H5/20; C08J2327/00; C08J2327/02; C08J2327/12; C08J2327/18; Y; Y10; Y10S; Y10S264/00; Y10S264/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2685707A
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US2712509A
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US2721139A
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US2717220A
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US2804678A
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US2676892A
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US2728698A
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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) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |