US2401537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of glass surfaces
Assignee: PPG Industries Inc
•
Filing: 1943-02-27
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Granted: 1946-06-04
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Expires: 1963-02-27
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:34
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C17/25; C03C15/00; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/217; C03C2218/00; C03C2218/10; C03C2218/11; C03C2218/111; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-06-03 | 1949-12-03 | 1950-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-06-03 | 1953-12-03 | 1954-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-06-03 | 1957-12-03 | 1958-06-04 | $7700.00 | Window Closed / Lapsed |