Patent US3660146A successfully refreshed from Google Patents.
US3660146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating stiff materials onto fragile, heat vulnerable substrate webs
Assignee: National Research Corp
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Filing: 1969-09-29
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Granted: 1972-05-02
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Expires: 1989-09-29
Abstract
Abstract Stiff materials such as boron and boron carbide are coated onto a polymeric or thin metal heated substrate web, backed by a screen carrier web and passing over an evaporant source of the coating material. The screen is transparent to radiation. The present invention relates to coating of continuous substrate webs with stiff materials.
Inventors
- 👤 Earl E Chadsey Jr
- 👤 Frank Feakes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:25
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/56; C23C14/562; C23C14/06; C23C14/14; C23C14/20; C23C14/54; C23C14/541
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
The method of claim 1 wherein the screen carrier is of flattened mesh form.
Claim 2
Dependent Claim
13 words
The method of claim 1 wherein the screen carrier is an apertured foil.
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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |