Patent US4137356A successfully refreshed from Google Patents.
US4137356A
Expired / Lapsed
US
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Non-skid place mat and the like
Assignee: Hoffmaster Co Inc
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Filing: 1977-10-25
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Granted: 1979-01-30
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Expires: 1997-10-25
Abstract
Abstract A place mat, coaster or the like possessing exceptional anti-skid characteristics comprises a planar base member, such as paper or plastic sheet, provided on the top and bottom surfaces thereof with a plurality of arrayed, discrete, spaced-apart projections of a high friction material. Such place mats, coasters and the like are produced by imprinting the aforementioned high friction material in the desired pattern or array on the top and bottom surfaces of the base member.
Inventors
- 👤 Charles T. Shoemaker
- 👤 Joseph P. Engler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:05
CPC Classifications
B; B60; B60B; B60B39/00; B60B39/02; B60B39/12; A; A47; A47G; A47G23/00; A47G23/03; A47G23/0303; A47G23/032; A47G27/00; A47G27/04; A47G27/0406; A47G27/0412; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24661; Y10T428/24802; Y10T428/24934; Y10T428/249921; Y10T428/249953; Y10T428/249962; Y10T428/249964; Y10T428/249965; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31971; Y10T428/31993
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
119 words
An article useful as a place mat, coaster or the like comprising: a flat or planar sheet of paper; a plurality of discrete, spaced first projections extending from the top surface of said paper, said first projections consisting essentially of foamed thermoplastic polymeric material providing a high coefficient of friction; a plurality of discrete, spaced second projections extending from the bottom surface of said sheet of paper, said second projections consisting essentially of foamed thermoplastic polymeric material providing a high coefficient of friction; said first and second projections being substantially integral with said top and bottom surfaces, respectively, of said sheet of paper and being arranged and aligned as illustrated in FIGS. 2 and 3, respectively, of the drawings.
Claim 2
Dependent Claim
119 words
An article useful as a place mat, coaster or the like comprising: a flat or planar sheet of paper; a plurality of discrete, spaced first projections extending from the top surface of said paper, said first projections consisting essentially of foamed thermoplastic polymeric material providing a high coefficient of friction; a plurality of discrete, spaced second projections extending from the bottom surface of said sheet of paper, said second projections consisting essentially of foamed thermoplastic polymeric material providing a high coefficient of friction; said first and second projections being substantially integral with said top and bottom surfaces, respectively, of said sheet of paper and being arranged and aligned as illustrated in FIGS. 2 and 3, respectively, of the drawings.
Claim 3
Dependent Claim
81 words
An article in accordance with claim 1 wherein the foamed thermoplastic polymeric material making up said first and second projections is selected from the group consisting of polyvinylidene chloride, a copolymer of vinylidene chloride and acrylonitrile in the weight ratios of from about 100:1 to about 70:30, copolymers of acrylonitrile and methyl acrylate in the weight ratios of from about 90:10 to about 80:20 and copolymers of methacrylonitrile and methyl acrylate in the weight ratios from about 93:7 to about 82:18.
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) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |