US3859522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for non-destructive testing of fish for sex
Assignee: BC Research (Canada)
•
Filing: 1973-05-15
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Granted: 1975-01-07
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Expires: 1993-05-15
Abstract
Abstract Method and apparatus for testing whole fish for sex utilizing the high light transmitting or light scattering properties of roe in female fish relative to the low light transmitting or light scattering properties of milt in male fish to distinguish the female from the male.
Inventors
- 👤 Robert M Cuthbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:45
CPC Classifications
B; B07; B07C; B07C5/00; B07C5/34; B07C5/342; A; A01; A01K; A01K61/00; A01K61/90; G; G01; G01N; G01N33/00; G01N33/02; G01N33/12; Y; Y10; Y10S; Y10S209/00; Y10S209/906; Y10S209/911
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
67 words
A rapid non-destructive method of testing whole fish for sex, which comprises directing radiant energy in to the gonads region of a whole fish, and detecting resultant energy emanating from said region, the magnitude of the detected energy relative to that applied providing an indication of the sex of the fish, roe in a female fish causing a higher energy emanation than milt in a male fish.
Claim 2
Dependent Claim
67 words
A rapid non-destructive method of testing whole fish for sex, which comprises directing radiant energy in to the gonads region of a whole fish, and detecting resultant energy emanating from said region, the magnitude of the detected energy relative to that applied providing an indication of the sex of the fish, roe in a female fish causing a higher energy emanation than milt in a male fish.
Claim 3
Dependent Claim
43 words
The method as claimed in claim 1 in which light is directed from a light source of constant intensity in to one side of the gonads region of the fish, and energy transmitted through said region is detected on the opposite side thereof.
Claim 4
Dependent Claim
54 words
The method as claimed in claim 1 in which light is directed from a light source of constant intensity in to a first area on one side of the fish and adjacent the gonads region thereof, and energy reflected and scattered from a second area on the same side of the fish is detected.
References Cited (Backward Citations)
US3255660A
Cited
US3275136A
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US3515273A
Cited
US3517807A
Cited
US3628657A
Cited
US3540824A
Cited
US3609306A
Cited
US3746166A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |