Patent US3867188A successfully refreshed from Google Patents.
US3867188A
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US
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Spunbonded nonwoven fabric
Assignee: Dow Silicones Corp
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Filing: 1973-07-25
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Granted: 1975-02-18
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Expires: 1993-07-25
Abstract
Abstract A spunbonded nonwoven fabric having a silicone-glycol copolymer thereon is disclosed. Of particular interest is the spunbonded nonwoven polypropylene fabric used as carpet backing.
Inventors
- 👤 Paul E Campbell
- 👤 John G Kokoszka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:05
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/643; D06M15/647; B; B25; B25C; B25C1/00; B25C1/08; B25C1/10; B25C1/18; B25C1/188; B32; B32B; B32B5/00; B32B5/02; B32B5/022; B32B5/06; B32B5/18; B32B5/22; B32B5/24; B32B5/245; B32B2262/00; B32B2262/02; B32B2262/0253; B32B2471/00; B32B2471/02; D10; D10B; D10B2503/00; D10B2503/04; D10B2503/041; D10B2503/042; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2311; Y10T442/2328; Y10T442/2861; Y10T442/291; Y10T442/2918
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
13 words
A SPUNBONDED NONWOVEN FABRIC HAVING THEREON A SILICONE-GLYCOL COPOLYMER HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
13 words
A SPUNBONDED NONWOVEN FABRIC HAVING THEREON A SILICONE-GLYCOL COPOLYMER HAVING THE GENERAL FORMULA
Claim 3
Dependent Claim
44 words
A fabric as defined in claim 1 wherein R contains from 3 to 6 carbon atoms, x has an average value from 50 to 75, y has an average value from 1 to 5, and z has an average value from 1 to 5.
Claim 4
Dependent Claim
38 words
A fabric as defined in claim 2 wherein R contains 3 carbon atoms, x has an average value of about 67, y has an average value of about 3, and z has an average value of about 2.5.
Claim 5
Dependent Claim
20 words
A fabric as defined in claim 1 which is selected from the group consisting of polyester fabrics and polyolefin fabrics.
Claim 6
Dependent Claim
12 words
A fabric as defined in claim 4 which is a polyolefin fabric.
Claim 7
Dependent Claim
19 words
A fabric as defined in claim 5 which is selected from the group consisting of polyethylene and polypropylene fabrics.
Claim 8
Dependent Claim
12 words
A fabric as defined in claim 6 which is a polyethylene fabric.
Claim 9
Dependent Claim
12 words
A fabric as defined in claim 6 which is a polypropylene fabric.
Claim 10
Dependent Claim
44 words
A fabric as defined in claim 8 wherein R contains from 3 to 6 carbon atoms, x has an average value from 50 to 75, y has an average value from 1 to 5, and z has an average value from 1 to 5.
Claim 11
Dependent Claim
38 words
A fabric as defined in claim 9 wherein R contains 3 carbon atoms, x has an average value of about 67, y has an average value of about 3, and z has an average value of about 2.5.
Claim 12
Dependent Claim
12 words
A fabric as defined in claim 8 which is a carpet backing.
Claim 13
Dependent Claim
44 words
A fabric as defined in claim 11 wherein R contains from 3 to 6 carbon atoms, x has an average value from 50 to 75, y has an average value from 1 to 5, and z has an average value from 1 to 5.
Claim 14
Dependent Claim
38 words
A fabric as defined in claim 12 wherein R contains 3 carbon atoms, x has an average value of about 67, y has an average value of about 3, and z has an average value of about 2.5.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |