US3434879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of thin films of the intermetallic compound nial
Assignee: Engelhard Industries Inc
•
Filing: 1965-09-29
•
Granted: 1969-03-25
•
Expires: 1985-09-29
Abstract
No abstract record available.
Inventors
- 👤 Robert C Langley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:48
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2755184A
Cited
US2807532A
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US3036909A
Cited
US3041197A
Cited
US3130045A
Cited
US3098862A
Cited
US3291642A
Cited
US3266912A
Cited
US3141744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |