US4807615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for anesthetizing aquatic animals
Assignee: Sumitomo Seika Chemicals Co Ltd
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Filing: 1987-09-08
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Granted: 1989-02-28
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Expires: 2007-09-08
Abstract
Abstract An improved method for anesthetizing aquatic animals which comprises anesthetizing the animals in water with nitrous oxide and carbon dioxide.
Inventors
- 👤 Koichi Nakagawa
- 👤 Kazunori Imura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:00
CPC Classifications
A; A61; A61D; A61D7/00; A61D7/04; A01; A01K; A01K61/00; A01K61/10; A01K61/90; A01K63/00; A01K63/02; A01K63/04; A01K63/042
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
19 words
A method for anesthetizing aquatic animals which comprises anesthetizing the animals in water with nitrous oxide and carbon dioxide.
Claim 2
Independent Claim
19 words
A method for anesthetizing aquatic animals which comprises anesthetizing the animals in water with nitrous oxide and carbon dioxide.
Claim 3
Dependent Claim
17 words
A method according to claim 1, wherein nitrous oxide and carbon dioxide are bubbled into water simultaneously.
Claim 4
Dependent Claim
20 words
A method according to claim 1, wherein a mixed gas of nitrous oxide and carbon dioxide is bubbled into water.
Claim 5
Dependent Claim
24 words
A method according to claim 1, wherein the animals are put in water into which nitrous oxide and carbon dioxide have been previously bubbled.
Claim 6
Dependent Claim
33 words
A method according to claim 1, wherein the animals are put in water into which nitrous oxide is bubbled and then they are transferred to another water into which carbon dioxide is bubbled.
Claim 7
Dependent Claim
37 words
A method according to claim 1, wherein the animals are put in water into which nitrous oxide has been previously bubbled and then they are transferred to another water into which carbon dioxide has been previously bubbled.
Claim 8
Dependent Claim
16 words
A method according to claim 1, wherein the animals is those belonging to the class Pisces.
Claim 9
Dependent Claim
18 words
A method according to claim 1, wherein the animals is those belonging to the class Cephalopoda or Pelecypoda.
Claim 10
Dependent Claim
16 words
A method according to claim 1, wherein the animals is those belonging to the class Crustacea.
Claim 11
Dependent Claim
23 words
A method according to claim 1, wherein the ratio of CO 2 :N 2 O is in the range of 1:1 to 1:100.
References Cited (Backward Citations)
US3644625A
Cited
US3876773A
Cited
JPS51103000A
Cited
JPS5813336A
Cited
US4546794A
Cited
US4554916A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-28 | 1992-08-29 | 1993-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-28 | 1996-08-29 | 1997-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-28 | 2000-08-29 | 2001-02-28 | $7700.00 | Window Closed / Lapsed |