Patent US3856614A successfully refreshed from Google Patents.
US3856614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foamed materials of synthetic resin and laminations comprising the same
Assignee: Lion Fat and Oil Co Ltd
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Filing: 1971-09-22
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Granted: 1974-12-24
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Expires: 1991-09-22
Abstract
Abstract Plastic materials are disclosed, which have a foamed or laminated structure and are suitable as construction materials and furniture materials. They are very superior in the mechanical strength and difficultly combustible. Even if they catch fire, no poisonous gases are produced.
Inventors
- 👤 R Susuki
- 👤 K Takano
- 👤 K Yoshikawa
- 👤 H Hoshi
- 👤 J Saito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:46
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/18; B32B27/20; C; C08; C08J; C08J9/00; C08J9/0066; B32B27/06; B32B27/065; B32B5/00; B32B5/18; C08J9/04; C08J9/06; C08J9/10; C08K; C08K3/00; C08K3/18; C08K3/24; E; E04; E04B; E04B1/00; E04B1/62; E04B1/92; E04B1/94; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/20; E04C2/205; E04C2/26; E04C2/284; B32B2419/00; B32B2479/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/249921; Y10T428/249953; Y10T428/249961; Y10T428/249981; Y10T428/249987; Y10T428/249988
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
71 words
A FOAMED THERMOPLASTIC LAMINATION COMPRISING AT LEAST TWO FOAMED LAYERS BONDED TO ONE ANOTHER IN LAMINATED RELATIONSHIP, EACH LAYER BEING A FOAMED THERMOPLASTIC RESIN MATERIAL SELECTED FROM THE GROUP OF HOMOPOLYMERS, COPOLYMERS THEREOF, AND MIXTURES THEREOF, AND FURTHER CONTAINING A FILLER SELECTED FROM THE GROUP CONSISTING OF CALCIUM SLFITE, GYPSUM AND MIXTURES THEREOF IN ADMIXTURE WITH SAID THERMOPLASTIC RESIN MATERIAL, SAID FOAMED LAYERS BEING FOAMED TO EXTENTS DIFFERENT FROM ONE ANOTHER.
Claim 2
Dependent Claim
71 words
A FOAMED THERMOPLASTIC LAMINATION COMPRISING AT LEAST TWO FOAMED LAYERS BONDED TO ONE ANOTHER IN LAMINATED RELATIONSHIP, EACH LAYER BEING A FOAMED THERMOPLASTIC RESIN MATERIAL SELECTED FROM THE GROUP OF HOMOPOLYMERS, COPOLYMERS THEREOF, AND MIXTURES THEREOF, AND FURTHER CONTAINING A FILLER SELECTED FROM THE GROUP CONSISTING OF CALCIUM SLFITE, GYPSUM AND MIXTURES THEREOF IN ADMIXTURE WITH SAID THERMOPLASTIC RESIN MATERIAL, SAID FOAMED LAYERS BEING FOAMED TO EXTENTS DIFFERENT FROM ONE ANOTHER.
Claim 3
Dependent Claim
55 words
The foamed thermoplastic lamination according to claim 1, wherein at least one of said layers is composed of a resin composition which has been foamed into ten times the original volume thereof, and at least one other layer is composed of a resin composition which has been foamed into three times the original volume thereof.
Claim 4
Dependent Claim
18 words
The foamed thermoplastic lamination according to claim 1 wherein said thermoplastic homopolymers are polyethylene, polypropylene, or polyvinyl chloride.
Claim 5
Dependent Claim
16 words
The foamed thermoplastic lamination according to claim 1, wherein said gypsum is di-hydrate, hemi-hydrate, or de-hydrate.
Claim 6
Dependent Claim
30 words
The foamed thermoplastic lamination according to claim 1, wherein said individual foamed layers have resin compositions which are different from one another in the kind of the thermoplastic resin material.
Claim 7
Dependent Claim
29 words
The foamed thermoplastic lamination according to claim 1, wherein said individual foamed layers have resin compositions which are different from one another in the kind of the filler material.
Claim 8
Dependent Claim
21 words
The foamed thermoplastic lamination according to claim 1, wherein said inorganic filler is incorporated at 10 - 90 percent by weight.
Claim 9
Dependent Claim
119 words
A foamed thermoplastic lamination consisting essentially of at least two foamed layers bonded to each other in laminated relationship, the at least two foamed layers being foamed to different extents, said layers consisting essentially of a thermoplastic resin material selected from the group consisting of thermoplastic homopolymers, copolymers thereof, and mixtures thereof, and from 1 - 95 percent by weight of a filler selected from the group consisting of calcium sulfite, gypsum, and mixtures thereof, said filler being admixed with said thermoplastic resin material, at least one of said layers being foamed to at least ten times the original volume thereof, and at least one other of said layers being foamed to about three times the original volume thereof.
Claim 10
Dependent Claim
119 words
A foamed thermoplastic lamination consisting essentially of at least two foamed layers bonded to each other in laminated relationship, the at least two foamed layers being foamed to different extents, said layers consisting essentially of a thermoplastic resin material selected from the group consisting of thermoplastic homopolymers, copolymers thereof, and mixtures thereof, and from 1 - 95 percent by weight of a filler selected from the group consisting of calcium sulfite, gypsum, and mixtures thereof, said filler being admixed with said thermoplastic resin material, at least one of said layers being foamed to at least ten times the original volume thereof, and at least one other of said layers being foamed to about three times the original volume thereof.
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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |