US3464880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface crystallized glass and method of producing
Assignee: PPG Industries Inc
•
Filing: 1968-05-06
•
Granted: 1969-09-02
•
Expires: 1988-05-06
Abstract
No abstract record available.
Inventors
- 👤 Dale W Rinehart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:06
CPC Classifications
C; C03; C03B; C03B27/00; C03B27/012; C03C; C03C10/00; C03C10/0018; C03C10/0027; C03C17/00; C03C17/22; C03C17/23; C03C21/00; C07; C07C; C07C17/00; C07C17/23; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/212; Y; Y10; Y10T; Y10T428/00; Y10T428/31; Y10T428/315
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |