US3302612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pattern masks and method for making same
Assignee: Individual
•
Filing: 1963-09-12
•
Granted: 1967-02-07
•
Expires: 1983-09-12
Abstract
No abstract record available.
Inventors
- 👤 Guy R Stutzman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:23
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/04; C23C14/042; H; H10; H10N; H10N97/00; H05; H05K; H05K3/00; H05K3/10; H05K3/14; H05K3/143
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
46 words
A THIN FILM PATTERN MASK COMPRISING, A PLATE OF GRAPHITE HAVING A THIN MEMBRANE SECTION SURROUNDING BY A WALL SECTION, AT LEAST ONE GROUP OF SLOTS CUT THROUGH SAID MEMBRANE SECTION, AND A THIN METALLIC COATING ON THE SIDE OF SAID PLATE OPPOSITE SAID WALL SECTION.
References Cited (Backward Citations)
US2979024A
Cited
US3088435A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |