Patent US3437428A successfully refreshed from Google Patents.
US3437428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygen scavenging from closed containers
Assignee: Universal Oil Products Co
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Filing: 1966-03-21
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Granted: 1969-04-08
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Expires: 1986-03-21
Abstract
No abstract record available.
Inventors
- 👤 Camilo Quesada
- 👤 Richard W Neuzil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:27
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/70; A23B2/704; A23B2/708; A23B2/712; A23B2/717
Claims Analysis
Total Claims: 0
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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) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |