US4154856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for stretching a coagulable extrudate
Assignee: BP Corp North America Inc
•
Filing: 1978-03-20
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Granted: 1979-05-15
•
Expires: 1998-03-20
Abstract
Abstract Stretched fibers or fibrils from single-cell dopes are prepared by extruding the dope into a moving coagulating bath wherein the fluid motion of the bath causes the extrudate to gradually stretch. The resultant stretched fibers are useful as textured food products.
Inventors
- 👤 Cavit Akin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:32
CPC Classifications
A; A23; A23J; A23J3/00; A23J3/22; A23J3/28; Y; Y10; Y10S; Y10S426/00; Y10S426/802
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
42 words
A method for gradually stretching a coagulable extrudate comprising injections the coagulable extrudate into a vortexing coagulating bath, wherein the extrudate is gradually stretched along the spiral path of the vortex, and collecting the stretched extrudate near the apex of the vortex.
Claim 2
Independent Claim
42 words
A method for gradually stretching a coagulable extrudate comprising injections the coagulable extrudate into a vortexing coagulating bath, wherein the extrudate is gradually stretched along the spiral path of the vortex, and collecting the stretched extrudate near the apex of the vortex.
Claim 3
Dependent Claim
17 words
The process of claim 1 wherein the coagulable extrudate is an extruded dope comprising single-cell protein organisms.
Claim 4
Dependent Claim
12 words
The process of claim 2 wherein the single-cell protein organisms are yeast.
Claim 5
Dependent Claim
17 words
The process of claim 1 wherein the vortex is created by agitation within the coagulating bath container.
Claim 6
Dependent Claim
19 words
The process of claim 1 wherein the vortex is created by a drain hole in the coagulating bath container.
Claim 7
Independent Claim
53 words
A method for gradually stretching a coagulable extrudate comprising injecting a coagulable extrudate into a coagulating bath contained within an annular space between a stationary cylinder and a concentric rotating conical segment wherein the extrudate is subjected to increasing velocity and gradually stretching as it spirals toward the apex of the conical segment.
Claim 8
Independent Claim
53 words
A method for gradually stretching a coagulable extrudate comprising injecting a coagulable extrudate into a coagulating bath contained within an annular space between a stationary cylinder and a concentric rotating conical segment wherein the extrudate is subjected to increasing velocity and gradually stretching as it spirals toward the apex of the conical segment.
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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) | 1982-05-14 | 1982-11-13 | 1983-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-14 | 1986-11-13 | 1987-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-14 | 1990-11-13 | 1991-05-15 | $7700.00 | Window Closed / Lapsed |