US4605614A
Expired / Lapsed
US
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Method for measuring plasmin
Assignee: Nitto Boseki Co Ltd
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Filing: 1984-02-13
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Granted: 1986-08-12
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Expires: 2004-02-13
Abstract
Abstract A method for measuring the activity of plasmin in plasma which comprises reacting a compound of the following formula or a salt thereof; ##STR1## with plasmin in a buffer solution having a pH of 7.2 to 7.6 and quantitatively determining the reaction product thereof.
Inventors
- 👤 Takeshi Nagasawa
- 👤 Katsumasa Kuroiwa
- 👤 Katsuyuki Takabayashi
- 👤 Yoshio Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:44
CPC Classifications
C; C07; C07K; C07K5/00; C07K5/04; C07K5/08; C07K5/0802; C07K5/0804; C07K5/0808; C07K5/0806; C07K5/0815; C07K5/0819; C12; C12Q; C12Q1/00; C12Q1/34; C12Q1/37; C12Q2337/00; C12Q2337/10; C12Q2337/12; G; G01; G01N; G01N2333/00; G01N2333/90; G01N2333/914; G01N2333/948; G01N2333/968
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
44 words
A method for measuring the activity of plasmin in plasma which comprises reacting a compound of the following formula or a salt thereof: ##STR80## with plasmin in a buffer solution having a pH of 7.2 to 7.6 and quantitatively determining the reaction product thereof.
Claim 2
Independent Claim
44 words
A method for measuring the activity of plasmin in plasma which comprises reacting a compound of the following formula or a salt thereof: ##STR80## with plasmin in a buffer solution having a pH of 7.2 to 7.6 and quantitatively determining the reaction product thereof.
Claim 3
Independent Claim
64 words
A method for measuring the activity of plasmin in plasma which comprises (a) reacting a compound of the following formula or a salt thereof: ##STR81## with plasmin in a buffer solution having a pH of 7.2 to 7.6; (b) oxidatively condensing the reaction product of step (a) with a coupler to convert to a colored compound; and (c) quantitatively determining the compound by colorimetry.
Claim 4
Independent Claim
64 words
A method for measuring the activity of plasmin in plasma which comprises (a) reacting a compound of the following formula or a salt thereof: ##STR81## with plasmin in a buffer solution having a pH of 7.2 to 7.6; (b) oxidatively condensing the reaction product of step (a) with a coupler to convert to a colored compound; and (c) quantitatively determining the compound by colorimetry.
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) | 1989-08-11 | 1990-02-10 | 1990-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-11 | 1994-02-10 | 1994-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-11 | 1998-02-10 | 1998-08-12 | $7700.00 | Window Closed / Lapsed |