US3548060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phototropic glass and method
Assignee: Nippon Sheet Glass Co Ltd
•
Filing: 1967-01-03
•
Granted: 1970-12-15
•
Expires: 1987-01-03
Abstract
No abstract record available.
Inventors
- 👤 Joji Suzuki
- 👤 Makoto Kume
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:39
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/22; G02B5/23; C; C03; C03C; C03C3/00; C03C3/12; C03C3/14; C03C3/145; C03C3/23; C03C4/00; C03C4/04; C03C4/06; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/903
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3208860A
Cited
US3419370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |