US3890098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for the determination of protrombin time and p.t.t.
Assignee: Individual
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Filing: 1973-11-16
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Granted: 1975-06-17
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Expires: 1993-11-16
Abstract
Abstract Reactive material is placed in a cup which communicates wtih another cup through a restricted orifice, plasma is placed in the second cup, and the reactive material and the plasma are moved from cup to cup by a pump until coagulation of the plasma takes place. Means are then provided for stopping the mixture of the reactive material and plasma, and other means are provided for measuring the time required for coagulation.
Inventors
- 👤 Enrique Moreno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:11
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/483; G01N33/487; G01N33/49; G01N33/4905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A MACHINE FOR DETERMINING PROTROMBIN TIME, COMPRISING A ROTATABLE MEMBER, AT A LEAST ONE PAIR OF ADJACENT CUP-LIIKE RECEPTACLES FORMED IN THE ROTATABLE MEMBER, RESTRICTED ORIFICE MEANS PROVIDING COMMUNICATION BETWEEN THE BOTTOM PARTS OF THE TWO CUP-LIKE MEMBERS, MEANS FOR SEALING THE UPPER END OF ONE OF THE CUP-LIKE MEMBERS AFTER A REACTIVE MATERIAL AND PLASMA HAVE BEEN PLACED THEREIN, MEANS FOR INDUCING MOVEMENT OF THE PLASMA AND REACTIVE MATERIAL FROM CUP TO CUP UNTIL COAGULATION TAKES PLACE, MEANS FOR STOPPINT THE INDUCED CUPTO-CUP MOVEMENT, AND MEANS FOR MEASURING THE TIME REQUIRED FOR COAGULATION.
Claim 2
Dependent Claim
94 words
A MACHINE FOR DETERMINING PROTROMBIN TIME, COMPRISING A ROTATABLE MEMBER, AT A LEAST ONE PAIR OF ADJACENT CUP-LIIKE RECEPTACLES FORMED IN THE ROTATABLE MEMBER, RESTRICTED ORIFICE MEANS PROVIDING COMMUNICATION BETWEEN THE BOTTOM PARTS OF THE TWO CUP-LIKE MEMBERS, MEANS FOR SEALING THE UPPER END OF ONE OF THE CUP-LIKE MEMBERS AFTER A REACTIVE MATERIAL AND PLASMA HAVE BEEN PLACED THEREIN, MEANS FOR INDUCING MOVEMENT OF THE PLASMA AND REACTIVE MATERIAL FROM CUP TO CUP UNTIL COAGULATION TAKES PLACE, MEANS FOR STOPPINT THE INDUCED CUPTO-CUP MOVEMENT, AND MEANS FOR MEASURING THE TIME REQUIRED FOR COAGULATION.
References Cited (Backward Citations)
US3486859A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |