Patent US3542536A successfully refreshed from Google Patents.
US3542536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming optical waveguide by irradiation of dielectric material
Assignee: Hazeltine Research Inc
•
Filing: 1967-09-01
•
Granted: 1970-11-24
•
Expires: 1987-09-01
Abstract
No abstract record available.
Inventors
- 👤 Richard P Flam
- 👤 Eugene R Sahineller
- 👤 Donald W Wilmot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:09
CPC Classifications
C; C03; C03C; C03C23/00; C03C23/0005; C03C23/005; C03C23/004; G; G02; G02B; G02B6/00; G02B6/10; G02B6/12; G02B6/13
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-23 | 1974-05-25 | 1974-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-23 | 1978-05-25 | 1978-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-23 | 1982-05-25 | 1982-11-24 | $7700.00 | Window Closed / Lapsed |