US3437599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogen peroxide decomposition control with alkaline earth metal carbonates
Assignee: PPG Industries Inc
•
Filing: 1966-10-28
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Granted: 1969-04-08
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Expires: 1986-10-28
Abstract
No abstract record available.
Inventors
- 👤 William E Helmick
- 👤 Blaine O Pray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:05
CPC Classifications
C; C01; C01B; C01B13/00; C01B13/02; C01B13/0203; C01B13/0211; C01B13/0214; D; D06; D06L; D06L4/00; D06L4/10; D06L4/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1181409A
Cited
US2820690A
Cited
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 |