US3039887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating process for the preparation of a film casting surface and resultant article
Assignee: Celanese Corp
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Filing: 1959-01-15
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Granted: 1962-06-19
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Expires: 1979-01-15
Abstract
No abstract record available.
Inventors
- 👤 Schneider Alfred
- 👤 Zukowski Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:49
CPC Classifications
B; B29; B29D; B29D7/00; B29D7/01; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31855
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A PROCESS FOR THE PREPARATION OF A SPLICELESS RESINOUS COATING WHICH COMPRISES MAINTAINING CONTACT BETWEEN A SUPPORTING SURFACE AND A CONTACT LIQUID, MOVING SAID SUPPORTING SURFACE RELATIVE TO SAID CONTACT LIQUID CONTINUOUSLY AND REPETITIVELY SO THAT SAID CONTACT LIQUID IS APPLIED TO SUCCESSIVE PORTIONS OF SAID SUPPORTING SURFACE, GRADUALLY CHANGING THE COMPOSITION OF SAID CONTACT LIQUID DURING THE COURSE OF SAID CONTACT, SAID COMPOSITION COMPRISING A SOLUTION OF A FILM-FORMING MATERIAL AT ONE STAGE OF SAID CONTACT AND COMPRISING A NON-SOLVENT FOR SAID FILM-FORMING MATERIAL AT A SUBSEQUENT STAGE OF SAID CONTACT AND BREAKING CONTACT BETWEEN SAID SUPPORTING SURFACE AND SAID CONTACT LIQUID WHEN SAID CONTACT LIQUID IS A NON-SOLVENT FOR SAID FILM-FORMING MATERIAL.
Claim 2
Dependent Claim
114 words
A PROCESS FOR THE PREPARATION OF A SPLICELESS RESINOUS COATING WHICH COMPRISES MAINTAINING CONTACT BETWEEN A SUPPORTING SURFACE AND A CONTACT LIQUID, MOVING SAID SUPPORTING SURFACE RELATIVE TO SAID CONTACT LIQUID CONTINUOUSLY AND REPETITIVELY SO THAT SAID CONTACT LIQUID IS APPLIED TO SUCCESSIVE PORTIONS OF SAID SUPPORTING SURFACE, GRADUALLY CHANGING THE COMPOSITION OF SAID CONTACT LIQUID DURING THE COURSE OF SAID CONTACT, SAID COMPOSITION COMPRISING A SOLUTION OF A FILM-FORMING MATERIAL AT ONE STAGE OF SAID CONTACT AND COMPRISING A NON-SOLVENT FOR SAID FILM-FORMING MATERIAL AT A SUBSEQUENT STAGE OF SAID CONTACT AND BREAKING CONTACT BETWEEN SAID SUPPORTING SURFACE AND SAID CONTACT LIQUID WHEN SAID CONTACT LIQUID IS A NON-SOLVENT FOR SAID FILM-FORMING MATERIAL.
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) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |