US3284198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making photolithographic plate
Assignee: Lockheed Martin Corp
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Filing: 1963-09-11
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Granted: 1966-11-08
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Expires: 1983-09-11
Abstract
No abstract record available.
Inventors
- 👤 Henry M Grotta
- 👤 Phyllis T Lugasch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:56
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
THE METHOD FOR PREPARING A DEEP-ETCH PHOTOLITHOGRAPHIC PLATE COMPRISING THE STEPS OF COATING A METALLIC PLATE WITH AN AQUEOUS COATING COMPOSITION COMPRISING SULFONATED DIAZIDOCARBAZOLE AND POLYMERIC COLLOID, DRYING THE COATING, EXPOSING THE COATING TO A LIGHT IMAGE, APPLYING DEEP-ETCH DEVELOPERS TO THE COATING TO REMOVE THE PORTION OF COATING NOT STRUCK BY LIGHT AND EXPOSE THE METAL THEREUNDER, DEEP-ETCHING THE EXPOSED METAL, CLEANING THE EXPOSED METAL, APPLYING A LACQUER COATING TO THE PARTIALLY COATED PLATE, APPLYING DEEP-ETH DEVELOPING INK TO THE LACQUERE COATING, WASHING WITH WARM WATER TO REMOVE THE STENCIL, AND APPLYING GUM ARABIC TO THE PLATE.
Claim 2
Independent Claim
98 words
THE METHOD FOR PREPARING A DEEP-ETCH PHOTOLITHOGRAPHIC PLATE COMPRISING THE STEPS OF COATING A METALLIC PLATE WITH AN AQUEOUS COATING COMPOSITION COMPRISING SULFONATED DIAZIDOCARBAZOLE AND POLYMERIC COLLOID, DRYING THE COATING, EXPOSING THE COATING TO A LIGHT IMAGE, APPLYING DEEP-ETCH DEVELOPERS TO THE COATING TO REMOVE THE PORTION OF COATING NOT STRUCK BY LIGHT AND EXPOSE THE METAL THEREUNDER, DEEP-ETCHING THE EXPOSED METAL, CLEANING THE EXPOSED METAL, APPLYING A LACQUER COATING TO THE PARTIALLY COATED PLATE, APPLYING DEEP-ETH DEVELOPING INK TO THE LACQUERE COATING, WASHING WITH WARM WATER TO REMOVE THE STENCIL, AND APPLYING GUM ARABIC TO THE PLATE.
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) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |