US2569752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making metal screen stencils
Assignee: Individual
•
Filing: 1945-07-04
•
Granted: 1951-10-02
•
Expires: 1965-07-04
Abstract
No abstract record available.
Inventors
- 👤 Harwood B Fowler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:19
CPC Classifications
B; B41; B41C; B41C1/00; B41C1/14; C; C23; C23F; C23F1/00; C23F1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
THE METHOD OF MAKING A METAL STENCIL SCREEN, WHICH COMPRISES COATING A PLATE WITH PHOTO-SENSITIVE RESIST MATERIAL, PHOTOGRAPHING ON ONE SURFACE A DESIGN WHICH THE STENCIL IS TO REPRODUCE, PHOTOGRAPHING ON THE OTHER SURFACE OF THE PLATE A MULTIPLICITY OF SMALL DOTS, SUBJECTING THE PLATE TO ETCHING IN A BATH TO SIMULTANEOUSLY ETCH IN THE DESIGN AND A MULTIPLICITY OF SMALL APERURES LEADING INTO THE DESIGN TO COMPLETE THE STENCIL.
Claim 2
Independent Claim
70 words
THE METHOD OF MAKING A METAL STENCIL SCREEN, WHICH COMPRISES COATING A PLATE WITH PHOTO-SENSITIVE RESIST MATERIAL, PHOTOGRAPHING ON ONE SURFACE A DESIGN WHICH THE STENCIL IS TO REPRODUCE, PHOTOGRAPHING ON THE OTHER SURFACE OF THE PLATE A MULTIPLICITY OF SMALL DOTS, SUBJECTING THE PLATE TO ETCHING IN A BATH TO SIMULTANEOUSLY ETCH IN THE DESIGN AND A MULTIPLICITY OF SMALL APERURES LEADING INTO THE DESIGN TO COMPLETE THE STENCIL.
References Cited (Backward Citations)
US378423A
Cited
US1456794A
Cited
US2166367A
Cited
US2071249A
Cited
US2395448A
Cited
US2217334A
Cited
US2340485A
Cited
US2389504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |