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Patent US3240933A successfully refreshed from Google Patents.
US3240933A
Expired / Lapsed
US
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Electrostatic treatment of silicone release coatings
Assignee: Dow Silicones Corp
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Filing: 1962-11-26
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Granted: 1966-03-15
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Expires: 1982-11-26
Abstract
No abstract record available.
Inventors
- 👤 Lester H Reinke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:16
CPC Classifications
D; D21; D21H; D21H25/00; D21H25/04; D21H25/06; B; B29; B29C; B29C59/00; B29C59/10; D21H19/00; D21H19/10; D21H19/14; D21H19/24; D21H19/32; B29K; B29K2083/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A METHOD OF TREATING A FILM OF CURED POLYDIMETHYLSILOXANCE WHICH COMPRISES SUBJECTING SAID FILM TO THE ACTION OF A CORONA DISCHARGE FOR SUFFICIENT TIME TO INCREASE ITS RELEASE VALUE BY AT LEAST 10 G. PER INCH, BUT TO A VALUE NOT GREATER THAN 700 G. PER INCH.
Claim 2
Independent Claim
47 words
A METHOD OF TREATING A FILM OF CURED POLYDIMETHYLSILOXANCE WHICH COMPRISES SUBJECTING SAID FILM TO THE ACTION OF A CORONA DISCHARGE FOR SUFFICIENT TIME TO INCREASE ITS RELEASE VALUE BY AT LEAST 10 G. PER INCH, BUT TO A VALUE NOT GREATER THAN 700 G. PER INCH.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |