US3531306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making infrared transmitting silicate glasses
Assignee: Corning Glass Works
•
Filing: 1966-12-29
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Granted: 1970-09-29
•
Expires: 1986-12-29
Abstract
No abstract record available.
Inventors
- 👤 William H Dumbaugh Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:28
CPC Classifications
C; C03; C03C; C03C1/00; C03C23/00; C03C23/0085; C03C3/00; C03C3/04; C03C3/062; C03C3/076; C03C3/083; C03C3/085; C03C3/087; C03C3/089; C03C3/091; C03C3/102; C03C3/108; C03C3/11; C03C3/112; C03C3/12; C03C3/122; C03C3/125; C03C3/253; C03C4/00; C03C4/10; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2982053A
Cited
US3338694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |