US3348934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating the surfaces of glass containers
Assignee: OI Glass Inc
•
Filing: 1964-12-23
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Granted: 1967-10-24
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Expires: 1984-12-23
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Hinson
- 👤 Dudley C Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:37
CPC Classifications
C; C03; C03C; C03C21/00; C03C21/007; C03C15/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A METHOD OF TREATING A SURFACE PORTION OF A GLASS ARTICLE, HAVING SURFACE ALKALINITY, TO PROVIDE SAID SURFACE PORTION WITH REDUCED ALKALINITY AND FREE OF WATER MARKS OF INSOLUBLE DEPOSITS WHICH COMPRISES THE STEPS OF: (1) CONVERTING NONGASEOUS SO2 TO THE GASEOUS STATE; (2) CONTACTING SAID SURFACE PORTION AT AN ELEVATED TEMPERATURE WITH SAID GASEOUS SO3 TO OBTAIN A WHITE BLOOM ON SAID SURFACE PORTION; AND (3) WATER WASHING SAID SURFACE PORTION TO REMOVE THE WHITE BLOOM.
Claim 2
Independent Claim
77 words
A METHOD OF TREATING A SURFACE PORTION OF A GLASS ARTICLE, HAVING SURFACE ALKALINITY, TO PROVIDE SAID SURFACE PORTION WITH REDUCED ALKALINITY AND FREE OF WATER MARKS OF INSOLUBLE DEPOSITS WHICH COMPRISES THE STEPS OF: (1) CONVERTING NONGASEOUS SO2 TO THE GASEOUS STATE; (2) CONTACTING SAID SURFACE PORTION AT AN ELEVATED TEMPERATURE WITH SAID GASEOUS SO3 TO OBTAIN A WHITE BLOOM ON SAID SURFACE PORTION; AND (3) WATER WASHING SAID SURFACE PORTION TO REMOVE THE WHITE BLOOM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |