US3606114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrillation of striated films
Assignee: Hercules LLC
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Filing: 1969-12-23
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Granted: 1971-09-20
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Expires: 1989-12-23
Abstract
Abstract A METHOD IS TAUGHT OF FIBRILLATING A STRAITED FILM BY CONTACTING A FILM WITH A HELICALLY GROOVED FIBRILLATION DEVICE HAVING ON ITS SURFACE AT LEAST ONE SECTION COMPRISING LEFT-HANDED HELICAL THREADS AND THE SAME NUMBER OF SECTIONS HAVING RIGHT-HAND HELICAL THREADS. THE THREADS ARE DISPOSED IN SUCH A WAY THAT AT THE POINT WHERE RIGHT AND LEFT-HAND THREADS MEET, THE THREADS OF ONE SECTION ABUT THE GROOVES BETWEEN THE THREADS ON THE OTHER SECTION. THE TOTAL NUMBER OF THREADS PER INCH OF THE SURFACE OF THE DEVICE IS APPROXIMATELY EQUAL TO THE NUMBER OF STRIATIONS PER INCH ON THE FILM TO BE FIBRILLATED.
Inventors
- 👤 Charles W Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:28
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/42; D01D5/423; Y; Y10; Y10S; Y10S264/00; Y10S264/47; Y10T; Y10T225/00; Y10T225/10; Y10T225/14; Y10T225/30; Y10T225/329
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |