Patent US4130683A successfully refreshed from Google Patents.
US4130683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sponge-like material having improved scrubbing and cleaning ability
Assignee: Hoechst AG
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Filing: 1978-03-15
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Granted: 1978-12-19
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Expires: 1998-03-15
Abstract
Abstract Disclosed is a porous sponge-like material having an improved scrubbing and cleaning ability which comprises a porous cellulose hydrate body having at least one netting attached to at least a portion of the surface of the body. In order to improve cleaning ability, the porous cellulose hydrate body contains a thermoplastic filler material. In the preferred embodiment, moreover, the filler material is comprised of a heat-sealable thermoplastic material and the netting at least partially comprised of a heat-sealable thermoplastic material to enable the facile bonding of the netting to the porous cellulose body by heat-sealing.
Inventors
- 👤 Wolfgang Michel
- 👤 Heinz Kalberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:12
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; A; A47; A47L; A47L13/00; A47L13/10; A47L13/16; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/22; B32B3/00; B32B3/26; B32B3/266; B32B5/02; B32B5/028; B32B5/16; B32B2305/00; B32B2305/38; B32B2307/00; B32B2307/30; B32B2307/31; B32B2307/50; B32B2307/51; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24777; Y10T428/24793; Y10T428/24802; Y10T428/249921; Y10T428/249953; Y10T428/249986; Y10T428/25; Y10T428/254; Y10T428/31504; Y10T428/31971
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
76 words
A porous sponge-like material suitable for use in cleaning comprising a porous cellulose hydrate body having at least one netting attached to at least a portion of the surface thereof, said porous cellulose hydrate body containing a filler material of thermoplastic synthetic resinous particulate material selected from the group consisting of thermoplastic synthetic resinous powders, fibers, or fibrids on at least that portion of the surface of said body which is in contact with said netting.
Claim 2
Dependent Claim
76 words
A porous sponge-like material suitable for use in cleaning comprising a porous cellulose hydrate body having at least one netting attached to at least a portion of the surface thereof, said porous cellulose hydrate body containing a filler material of thermoplastic synthetic resinous particulate material selected from the group consisting of thermoplastic synthetic resinous powders, fibers, or fibrids on at least that portion of the surface of said body which is in contact with said netting.
Claim 3
Dependent Claim
28 words
The material of claim 1, wherein said thermoplastic filler material is a heat-sealable thermoplastic material, and said netting is at least partially comprised of a heat-sealable thermoplastic material.
Claim 4
Dependent Claim
19 words
The material of claim 2, wherein said material contains at least 3% by weight of said thermoplastic filler material.
Claim 5
Dependent Claim
22 words
The material of claim 3, wherein said material contains from about 3 to about 40% by weight of said thermplastic filler material.
Claim 6
Dependent Claim
19 words
The material of claim 3, wherein said material contains at least 10% by weight of said thermoplastic filler material.
Claim 7
Dependent Claim
22 words
The material of claim 5, wherein said material contains from about 10 to about 40% by weight of said thermoplastic filler material.
Claim 8
Dependent Claim
13 words
The material of claim 3, wherein said material has a sheet-like rectangular shape.
Claim 9
Dependent Claim
26 words
The material of claim 3, wherein said netting is bonded to said porous cellulose hydrate body by bonding of periphery of said netting to said body.
Claim 10
Dependent Claim
12 words
The material of claim 8, wherein said netting comprises a latticed fabric.
Claim 11
Dependent Claim
27 words
The material of claim 8, wherein a plurality of nettings are adhered to the surface of said porous cellulose hydrate body, said nettings having different scrubbing effects.
Claim 12
Dependent Claim
29 words
The material of claim 3, wherein said porous cellulose hydrate body further comprises plastic particles of 0.1 to 2 mm adhered to the surface thereof to improve scrubbing power.
Claim 13
Dependent Claim
59 words
A process for the manufacture of the porous material of claim 1, comprising the steps of: a. preparing a viscose mixture containing a pore-forming agent and said thermoplastic filler material; b. forming said viscose mixture into said porous cellulose hydrate body; and, c. bonding at least one netting to at least a portion of the surface of said body.
Claim 14
Dependent Claim
21 words
The process of claim 12, wherein said viscose mixture contains from about 3 to about 45% of said thermoplastic filler material.
Claim 15
Dependent Claim
34 words
The process of claim 13, wherein said thermoplastic filler material is a heat-sealable thermoplastic material, said netting is at least partially comprised of a heat-sealable material, and said bonding step comprises a heat-sealing step.
Claim 16
Dependent Claim
26 words
The process of claim 14, wherein said netting is bonded to said porous cellulose hydrate body by heat-sealing the periphery of said netting to said body.
Claim 17
Dependent Claim
23 words
The process of claim 14, further comprising thermally treating said porous cellulose hydrate body under pressure to improve its mechanical and cleaning properties.
References Cited (Backward Citations)
US2885703A
Cited
US3080688A
Cited
US3629896A
Cited
US3634183A
Cited
US4015306A
Cited
US3974319A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-18 | 1982-06-19 | 1982-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-18 | 1986-06-19 | 1986-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-18 | 1990-06-19 | 1990-12-19 | $7700.00 | Window Closed / Lapsed |