US4315908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of determining human chorionic gonadotropin (HCG) in the urine
Assignee: Individual
•
Filing: 1979-12-03
•
Granted: 1982-02-16
•
Expires: 1999-12-03
Abstract
Abstract A method of determining human chorionic gonadotropin (HCG) in the urine. The urine to be tested is absorbed on an absorbent body. HCG is determined on the absorbent body by a radioimmunoassay method.
Inventors
- 👤 Tamar Zer
- 👤 Avraham Zer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:54
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/74; G01N33/76
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
89 words
A method of analyzing urine to determine the presence or absence therein of human chorionic gonadotropin which comprises contacting the urine to be tested with an absorbent body which absorbs said urine and with it human chorionic gonadotropin that may be contained therein, contacting said absorbent body containing the absorbed urine with serum from a non-pregnant mammal to extract the urine from said body into the serum, and subjecting the thus obtained serum containing the extracted urine to radioimmunoassay for the determination of any human chorionic gonadotropin contained therein.
Claim 2
Independent Claim
89 words
A method of analyzing urine to determine the presence or absence therein of human chorionic gonadotropin which comprises contacting the urine to be tested with an absorbent body which absorbs said urine and with it human chorionic gonadotropin that may be contained therein, contacting said absorbent body containing the absorbed urine with serum from a non-pregnant mammal to extract the urine from said body into the serum, and subjecting the thus obtained serum containing the extracted urine to radioimmunoassay for the determination of any human chorionic gonadotropin contained therein.
Claim 3
Dependent Claim
27 words
A method according to claim 1, wherein the absorbent body is pretreated with an agent which prevents the unspecific binding of human chorionic gonadotropin by said body.
Claim 4
Dependent Claim
12 words
A method according to claim 2, wherein said agent is a protein.
Claim 5
Dependent Claim
13 words
A method according to claim 2, wherein said agent is a resinous substance.
Claim 6
Dependent Claim
18 words
A method according to claim 1, wherein said absorbent body is pretreated for the prevention of microbiological growth.
Claim 7
Dependent Claim
24 words
A method according to claim 1, wherein the absorbent body is pretreated with an agent that provides an observable reaction when contacted with urine.
Claim 8
Dependent Claim
17 words
Method according to claim 1 wherein the urine to be analyzed is obtained from a human female.
Claim 9
Dependent Claim
15 words
Method according to claim 7 wherein said serum is obtained from a non-pregnant human female.
Claim 10
Dependent Claim
44 words
Method according to claim 1 wherein said urine is obtained from a human female suspected of being pregnant and wherein said serum is obtained from a non-pregnant human female, the presence of human chorionic gonadotropin in said urine indicating that the female is pregnant.
References Cited (Backward Citations)
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US4123509A
Cited
US4033723A
Cited
US4200436A
Cited
US4138214A
Cited
US4208187A
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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) | 1985-02-15 | 1985-08-17 | 1986-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-15 | 1989-08-17 | 1990-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-15 | 1993-08-17 | 1994-02-16 | $7700.00 | Window Closed / Lapsed |