US3499752A
Expired / Lapsed
US
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Process and apparatus for pulsating a liquid in a pulsation column
Assignee: Stamicarbon BV
•
Filing: 1964-07-22
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Granted: 1970-03-10
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Expires: 1984-07-22
Abstract
No abstract record available.
Inventors
- 👤 Winfried J W Vermijs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:29
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/02; B03B5/10; B03B5/24; B01; B01D; B01D11/00; B01D11/04; B01D11/0426; B01D11/0438; B01D15/00; B01D47/00; B01J; B01J19/00; B01J19/18; B01J19/185; B03B5/20; B01J2219/00; B01J2219/00049; B01J2219/00182; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87169; Y10T137/87233; Y10T137/87241
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |