Patent US3345803A successfully refreshed from Google Patents.
US3345803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for degassing viscose
Assignee: FMC Corp
•
Filing: 1965-01-07
•
Granted: 1967-10-10
•
Expires: 1985-01-07
Abstract
No abstract record available.
Inventors
- 👤 Frederick R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:54
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/10; D01D1/103; B; B01; B01D; B01D19/00; B01D19/0042; B01D19/0052; B01D19/0057; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3084
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A METHOD OF DEGASSING A VISCOUS LIQUID WHICH INCLUDES THE STEPS OF ESTABLISHING ALONG A CONFINED PATH A LAMINAR FLOW OF A VISCOUS LIQUID HAVING BUBBLES OF GAS CONTAINED THEREIN SO THAT A SHEAR GRADIENT IS IMPOSED UPON SUCH LIQUID BETWEEN THE CENTRAL AND OUTERMOST PORTIONS THEREOF, TO CAUSE BUBBLES OF CONTAINED GAS IN THE OUTERMOST PORTION TO MIGRATE TOWARD THE CENTRAL PORTION OF THE LIQUID FLOW CONCOMITANTLY AS THE LIQUID TRAVELS ALONG THE CONFINED PATH, SEPARATING THE OUTERMOST PORTION OF THE LIQUID FLOW FROM THE REMAINDER THEREOF AND COLLECTING THE SEPARATED PORTION OF THE LIQUID.
Claim 2
Independent Claim
96 words
A METHOD OF DEGASSING A VISCOUS LIQUID WHICH INCLUDES THE STEPS OF ESTABLISHING ALONG A CONFINED PATH A LAMINAR FLOW OF A VISCOUS LIQUID HAVING BUBBLES OF GAS CONTAINED THEREIN SO THAT A SHEAR GRADIENT IS IMPOSED UPON SUCH LIQUID BETWEEN THE CENTRAL AND OUTERMOST PORTIONS THEREOF, TO CAUSE BUBBLES OF CONTAINED GAS IN THE OUTERMOST PORTION TO MIGRATE TOWARD THE CENTRAL PORTION OF THE LIQUID FLOW CONCOMITANTLY AS THE LIQUID TRAVELS ALONG THE CONFINED PATH, SEPARATING THE OUTERMOST PORTION OF THE LIQUID FLOW FROM THE REMAINDER THEREOF AND COLLECTING THE SEPARATED PORTION OF THE LIQUID.
References Cited (Backward Citations)
US1095463A
Cited
US1083740A
Cited
DE452265C
Cited
US2509267A
Cited
US2713919A
Cited
US2813833A
Cited
US2868312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |