US3577508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating and laminating process
Assignee: WR Grace and Co
•
Filing: 1969-07-15
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Granted: 1971-05-04
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Expires: 1989-07-15
Abstract
Abstract A PROCESS FOR PREPARING A SELF-SUPPORTING LAMINATE HAVING A LOW PERMEABILITY TO GASES, COMPRISING APPLYING A COATING OF A FILM-FORMING POLYMER-DILUENT SYSTEM TO A SUBSTRATE; ADJUSTING THE THICKNESS OF THE COATING; DRYING THE COATING TO A SOLID STATE; APPLYING A COATING OF A DISPERSION OF A MINERAL INORGANIC, OR ORGANIC FILLER HAVING A PLATELIKE STRUCTURE TO THE RESULTING FILM; ADJUSTING THE THICKNESS OF THE COATING OF FILLER; APPLYING AT LEAST ONE COATING OR THE FILM-FORMING POLYMER-DILUENT SYSTEM TO THE DRIED COATING OF FILLER; ADJUSTING THE THICKNESS OF THE COATING OF FILM-FORMING DILUENT SYSTEM; AND DRYING THE COATING OF FILM-FORMING DILUENT SYSTEM.
Inventors
- 👤 Charles W Desaulniers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:43
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/24; B05D7/26; B32; B32B; B32B27/00; C; C08; C08K; C08K7/00; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/256; Y10T428/259
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |