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US3542198A
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US
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Assignee: HYCOR Corp LAKE BLUFF
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Filing: 1968-02-26
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Granted: 1970-11-24
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Expires: 1988-02-26
Abstract
No abstract record available.
Inventors
- 👤 Olov Birger Borjeson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:39
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/15; B01D33/35; B01D33/37; B01D33/39; B01D33/44; B01D33/46; B01D33/461; B01D33/70; B01D33/72; B01D33/76; B01D33/80; B01D33/804
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-23 | 1974-05-25 | 1974-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-23 | 1978-05-25 | 1978-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-23 | 1982-05-25 | 1982-11-24 | $7700.00 | Window Closed / Lapsed |