US3179729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making sandblast stencils
Assignee: Individual
•
Filing: 1961-08-31
•
Granted: 1965-04-20
•
Expires: 1981-08-31
Abstract
No abstract record available.
Inventors
- 👤 Lucins D Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:28
CPC Classifications
B; B05; B05C; B05C17/00; B05C17/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THE METHOD OF MAKING RESILIENT STENCILS FOR SANDBLAST CARVING AND THE LIKE COMPRISING, PRODUCING AN ETCH RESISTANT COATING ON A PLATE OF ETCHABLE MATERIAL IN A DESIGN, ETCHING COMPLETELY THROUGH SAID PLATE IN THE AREAS NOT COVERED BY THE COATING IN SAID DESIGN TO FORM OPENINGS IN SAID PLATE CORRESPONDING TO SAID DESIGN, AND THEREAFTER APPLYING A RESILIENT SANDBLAST-RESISTANT MATERIAL ONLY ON THE FACE AREAS REMAINING ON SAID PLATE AFTER THE OPENINGS HAVE BEEN ETCHED THROUGH SAID PLATE TO FORM A RESILIENT SANDBLAST-RESISTANT LAYER HAVING OPENINGS THEREIN CORRESPONDING TO THE OPENINGS IN THE PLATE.
Claim 2
Independent Claim
94 words
THE METHOD OF MAKING RESILIENT STENCILS FOR SANDBLAST CARVING AND THE LIKE COMPRISING, PRODUCING AN ETCH RESISTANT COATING ON A PLATE OF ETCHABLE MATERIAL IN A DESIGN, ETCHING COMPLETELY THROUGH SAID PLATE IN THE AREAS NOT COVERED BY THE COATING IN SAID DESIGN TO FORM OPENINGS IN SAID PLATE CORRESPONDING TO SAID DESIGN, AND THEREAFTER APPLYING A RESILIENT SANDBLAST-RESISTANT MATERIAL ONLY ON THE FACE AREAS REMAINING ON SAID PLATE AFTER THE OPENINGS HAVE BEEN ETCHED THROUGH SAID PLATE TO FORM A RESILIENT SANDBLAST-RESISTANT LAYER HAVING OPENINGS THEREIN CORRESPONDING TO THE OPENINGS IN THE PLATE.
References Cited (Backward Citations)
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Cited
US2695351A
Cited
US2845379A
Cited
US3117403A
Cited
US2967766A
Cited
US3138503A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |