US4749600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid absorbing and immobilizing packet
Assignee: Multisorb Technologies Inc
•
Filing: 1986-05-16
•
Granted: 1988-06-07
•
Expires: 2006-05-16
Abstract
Abstract A packet for absorbing and immobilizing a liquid including an envelope which is degradable in the liquid and a liquid absorbing and immobilizing material in the envelope.
Inventors
- 👤 John S. Cullen
- 👤 Samuel A. Incorvia
- 👤 Willis B. Ryon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:41
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/24; B65D81/26; B65D81/264; B65D65/00; B65D65/38; B65D65/46; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1303; Y10T428/1307; Y10T428/1334; Y10T428/23; Y10T428/239; Y10T428/24; Y10T428/24802; Y10T428/24843; Y10T428/24851; Y10T428/24926
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
65 words
A packet for absorbing and immobilizing a relatively large amount of liquid comprising a degradable envelope which is degradable in said liquid, and a relatively small mount of liquid absorbing and immobilizing material means in said envelope for immobilizing said liquid by forming a gel-like substance on absorbing said relatively large amount of liquid after said degradable envelope degrades after being contacted by said liquid.
Claim 2
Dependent Claim
65 words
A packet for absorbing and immobilizing a relatively large amount of liquid comprising a degradable envelope which is degradable in said liquid, and a relatively small mount of liquid absorbing and immobilizing material means in said envelope for immobilizing said liquid by forming a gel-like substance on absorbing said relatively large amount of liquid after said degradable envelope degrades after being contacted by said liquid.
Claim 3
Dependent Claim
25 words
A packet as set forth in claim 1 wherein said liquid includes water and wherein said liquid absorbing and immobilizing material means is sodium polyacrylate.
Claim 4
Dependent Claim
23 words
A packet as set forth in claim 1 wherein said envelope includes a layer of starch paper with a coating of polyvinyl acetate.
Claim 5
Dependent Claim
47 words
A packet as set forth in claim 1 wherein said envelope includes a layer of material which is degradable in said liquid, and a coating of material on said layer of material which permits said layer of material to be sealed in the form of said envelope.
Claim 6
Dependent Claim
113 words
In an outer container having an inner container with a relatively large amount of liquid from which said liquid can leak, an absorbent packet located between said inner and outer containers for absorbing and immobilizing said relatively large amount of liquid within said outer container in the event of leakage of said relatively large amount of liquid from said inner container comprising a degradable envelope which is degradable in said liquid, and a relatively small amount of liquid absorbing and immobilizing material means in said envelope for immobilizing said liquid by forming gel-like substance on absorbing said relatively large amount of liquid after said degradable envelope degrades after being contacted by said liquid.
Claim 7
Dependent Claim
113 words
In an outer container having an inner container with a relatively large amount of liquid from which said liquid can leak, an absorbent packet located between said inner and outer containers for absorbing and immobilizing said relatively large amount of liquid within said outer container in the event of leakage of said relatively large amount of liquid from said inner container comprising a degradable envelope which is degradable in said liquid, and a relatively small amount of liquid absorbing and immobilizing material means in said envelope for immobilizing said liquid by forming gel-like substance on absorbing said relatively large amount of liquid after said degradable envelope degrades after being contacted by said liquid.
Claim 8
Dependent Claim
51 words
In an outer container having an inner container with liquid from which said liquid can leak as set forth in claim 5 wherein said envelope includes an outer layer of material which is degradable in said liquid and a sealing coating on the inner surface of said outer layer of material.
Claim 9
Dependent Claim
59 words
In an outer container having an inner container with liquid from which said liquid can leak as set forth in claim 5 wherein said envelope includes a layer of material which is degradable in said liquid, and a coating of material on said layer of material which permits said layer to be sealed in the form of said envelope.
Claim 10
Dependent Claim
39 words
In an outer container having an inner container with liquid from which said liquid can leak as set forth in claim 7 wherein said layer of material comprises starch paper, and wherein said coating of material comprises polyvinyl acetate.
Claim 11
Dependent Claim
32 words
In an outer container having an inner container with liquid from which said liquid can leak as set forth in claim 5 wherein said absorbing and immobilizing material means is sodium polyacrylate.
Claim 12
Dependent Claim
59 words
In an outer container having an inner container with liquid from which said liquid can leak as set forth in claim 9 wherein said envelope includes a layer of material which is degradable in said liquid, and a coating of material on said layer of material which permits said layer to be sealed in the form of said envelope.
Claim 13
Dependent Claim
37 words
In an outer container having an inner container with liquid from which said liquid can leak as set forth in claim 10 wherein said coating of material is on the entire surface of said layer of material.
Claim 14
Dependent Claim
37 words
In an outer container having an inner container with liquid from which said liquid can leak as set forth in claim 11 wherein said layer of material comprises starch paper, and wherein said coating comprises polyvinyl acetate.
Claim 15
Dependent Claim
55 words
A packet for absorbing and immobilizing a liquid comprising a degradable envelope which is degradable in said liquid, and a first volume of liquid absorbing and immobilizing material means in said degradable envelope for absorbing and immobilizing a much larger second volume of said liquid after said degradable envelope degrades after contact with said liquid.
Claim 16
Dependent Claim
55 words
A packet for absorbing and immobilizing a liquid comprising a degradable envelope which is degradable in said liquid, and a first volume of liquid absorbing and immobilizing material means in said degradable envelope for absorbing and immobilizing a much larger second volume of said liquid after said degradable envelope degrades after contact with said liquid.
Claim 17
Dependent Claim
44 words
A packet as set forth in claim 13 wherein said degradable envelope includes a layer of degradable paper, and a sealing coating on said layer of degradable paper which permits said layer of degradable papers to be sealed in the form of an envelope.
Claim 18
Dependent Claim
95 words
In an outer container having an inner container with liquid from which said liquid can leak, an absorbent packet located between said inner and outer containers for absorbing and immobilizing said liquid within said outer container in the event of leakage of said liquid from said inner container comprising a degradable envelope which is degradable in said liquid, and a first volume of liquid absorbing and immobilizing material means in said envelope for absorbing and immobilizing a much larger second volume of said liquid after said degradable envelope degrades after being contacted by said liquid.
Claim 19
Dependent Claim
95 words
In an outer container having an inner container with liquid from which said liquid can leak, an absorbent packet located between said inner and outer containers for absorbing and immobilizing said liquid within said outer container in the event of leakage of said liquid from said inner container comprising a degradable envelope which is degradable in said liquid, and a first volume of liquid absorbing and immobilizing material means in said envelope for absorbing and immobilizing a much larger second volume of said liquid after said degradable envelope degrades after being contacted by said liquid.
Claim 20
Dependent Claim
44 words
A packet for absorbing and immobilizing a liquid comprising an envelope which is degradable in said liquid, and a liquid absorbing and immobilizing material in said envelope for absorbing and immobilizing said liquid after said degradable envelope degrades after being contacted by said liquid.
Claim 21
Dependent Claim
44 words
A packet for absorbing and immobilizing a liquid comprising an envelope which is degradable in said liquid, and a liquid absorbing and immobilizing material in said envelope for absorbing and immobilizing said liquid after said degradable envelope degrades after being contacted by said liquid.
Claim 22
Dependent Claim
85 words
In an outer container having an inner container with liquid from which said liquid can leak, an absorbent packet located between said inner and outer containers for absorbing and immobilizing said liquid within said outer container in the event of leakage of said liquid from said inner container comprising a degradable envelope which is degradable in said liquid, and a liquid absorbing and immobilizing material in said envelope for absorbing and immobilizing said liquid after said degradable envelope degrades after being contacted by said liquid.
Claim 23
Dependent Claim
85 words
In an outer container having an inner container with liquid from which said liquid can leak, an absorbent packet located between said inner and outer containers for absorbing and immobilizing said liquid within said outer container in the event of leakage of said liquid from said inner container comprising a degradable envelope which is degradable in said liquid, and a liquid absorbing and immobilizing material in said envelope for absorbing and immobilizing said liquid after said degradable envelope degrades after being contacted by said liquid.
References Cited (Backward Citations)
US2283867A
Cited
GB711186A
Cited
FR1362935A
Cited
US3990872A
Cited
US4124116A
Cited
US4615923A
Cited
US4603069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-07 | 1991-12-07 | 1992-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-07 | 1995-12-07 | 1996-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-07 | 1999-12-07 | 2000-06-07 | $7700.00 | Window Closed / Lapsed |