Patent US3438801A successfully refreshed from Google Patents.
US3438801A
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US
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Method of rendering glass surfaces abrasion-resistant and glass articles produced thereby
Assignee: OI Glass Inc
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Filing: 1965-01-04
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Granted: 1969-04-15
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Expires: 1985-01-04
Abstract
No abstract record available.
Inventors
- 👤 Walter J Schlientz
- 👤 Bradley E Wiens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:11
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/28; C03C17/30; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31551; Y10T428/31609; Y10T428/31612
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2995533A
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US2965596A
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US3075948A
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US3177170A
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US3318757A
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US3161537A
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US3161536A
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US3285802A
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US3323889A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |