Patent US3467575A successfully refreshed from Google Patents.
US3467575A
Expired / Lapsed
US
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Process of bleaching paper with peracetic acid
Assignee: Hooker Chemical Corp
•
Filing: 1965-08-02
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Granted: 1969-09-16
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Expires: 1985-08-02
Abstract
No abstract record available.
Inventors
- 👤 Morris Wayman
- 👤 William H Rapson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:34
CPC Classifications
D; D21; D21H; D21H25/00; D21H25/02; D21C; D21C9/00; D21C9/10; D21C9/1057; D21H17/00; D21H17/63; D21H17/66; D21H21/00; D21H21/14; D21H21/32; D21H5/00; D21H5/12; D21H5/1272; D21H5/1281
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1154851A
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US2598580A
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US2862784A
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US2963395A
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US2970882A
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US3085039A
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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) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |