US3321086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wasp-waist hourglass-shaped dialysis fermentor flask
Assignee: Individual
•
Filing: 1965-10-29
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Granted: 1967-05-23
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Expires: 1985-10-29
Abstract
No abstract record available.
Inventors
- 👤 Jule N Dews
- 👤 George W Schmersahl
- 👤 Iii William C Patrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:58
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/24; B01D61/28; C; C12; C12M; C12M23/00; C12M23/02; C12M23/46; C12M29/00; C12M29/04; Y; Y10; Y10S; Y10S435/00; Y10S435/803
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
82 words
A SYSTEM COMPRISING A WASP-WAIST HOURGLASS-SHAPED VESSEL HAVING A SEMIPERMEABLE TUBULAR MEMBRANE EXTENDING HORIZONTALLY AND LONGITUDINALLY THROUGHOUT THE ENTIRE CENTER THEREOF, OUTBOARD COMPARTMENT MEANS ATTACHED TO BOTH ENDS OF THE MEMBRANE AND EXTENDING BEYOND THE ENDS OF THE VESSEL, INGRESS AND EGRESS MEANS LOCATED ON THE PERIPHERY OF THE VESSEL AND OUTBOARD COMPARTMENTS, SUPPORT MEANS, FASTENING MEANS SECURING THE VESSEL IN A HORIZONTAL POSITION TO THE FRAME OF THE SUPPORT MEANS AND ADDITIONAL FASTENING MEANS SECURING THE OUTBOARD COMPARTMENTS TO THE VESSEL.
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) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |