US3595718A
Expired / Lapsed
US
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Dry etching system with inert particles coated with adsorbed acid
Assignee: Celanese Corp
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Filing: 1968-01-22
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Granted: 1971-07-27
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Expires: 1988-01-22
Abstract
Abstract THIS DISCLOSURE REFERS TO OR DESCRIBES CERTAIN PRIOR ART SYSTEMS FOR ETCHING THE SURFACE OF METALS AND PLASTICS TO FORM IMPRESSIONS ON SUCH SURFACE OR TO MAKE SUCH SURFACES RECEPTIVE TO COATINGS. ALSO DISCLOSED HEREIN IS A NEW ETCHING SYSTEM WHICH IS PARTICULARLY EFFECTIVE FOR THE AFOREMENTIONED, AND OTHER, PURPOSES.
Inventors
- 👤 David H Fishman
- 👤 Frank M Berardinelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:27
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/10; C23F1/14; C08; C08J; C08J7/00; C08J7/12; C08J7/126
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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |