US3491004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing crystalline bodies consisting of one or more chalcogenides of elements from the group ii-b of the periodic system or of mixed crystals thereof and to bodies obtained by these methods
Assignee: US Philips Corp
•
Filing: 1967-05-29
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Granted: 1970-01-20
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Expires: 1987-05-29
Abstract
No abstract record available.
Inventors
- 👤 Hendrikus Josephus Antoni Dijk
- 👤 Jan Goorissen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:47
CPC Classifications
C; C25; C25F; C25F3/00; C25F3/02; C25F3/12; Y; Y10; Y10S; Y10S148/00; Y10S148/051; Y10S148/064; Y10S148/135
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3081418A
Cited
US3042593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |