US4738888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Serving mat
Assignee: AMBERDEANE Inc
•
Filing: 1987-04-03
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Granted: 1988-04-19
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Expires: 2007-04-03
Abstract
Abstract A serving mat includes a pair of superimposed sheets sealed to each other to define a chamber having a free-flowing liquid medium therein with a plurality of discrete articles suspended in said liquid medium and movable by manipulation of the liquid medium in the chamber.
Inventors
- 👤 Terese A. Pantaleo
- 👤 Donald E. Perrin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:24
CPC Classifications
B; B32; B32B; B32B3/00; B32B3/02; B32B3/08; A; A47; A47G; A47G23/00; A47G23/03; A47G23/0303; A63; A63F; A63F7/00; A63F7/04; A63F7/045; A63F9/00; A63F9/001; B32B27/00; B32B27/32; B44; B44C; B44C5/00; B44C5/005; B44F; B44F1/00; B44F1/08; B44F1/10; A63F3/00; A63F3/00173; A63F3/00261; A63F2003/00457; A63F2003/0046; A63F7/22; A63F7/36; A63F7/3603; A63F2007/3607; A63F2009/0047; A63F2250/00; A63F2250/04; A63F5/00; A63F5/04; B32B2307/00; B32B2307/30; B32B2307/31; B32B2307/40; B32B2307/412; B32B2307/70; B32B2307/744; B32B2323/00; B32B2323/10; Y; Y10; Y10T; Y10T428/00; Y10T428/16; Y10T428/162; Y10T428/24; Y10T428/24479; Y10T428/24562; Y10T428/249921; Y10T428/249994; Y10T428/249995; Y10T428/249997
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
85 words
An article of manufacture comprising a pair of superimposed pliable sheets interconnected along at least peripheral edges and intermediate said edges to define an annular chamber therebetween with a support member secured to one sheet to prevent sliding on a support surface, said chamber having a liquid medium therein in a mobile state and free to move therein, said liquid medium having at least one discrete article suspended therein manipulatable by causing displacement of said liquid medium to move said discrete articles in said chamber.
Claim 2
Dependent Claim
85 words
An article of manufacture comprising a pair of superimposed pliable sheets interconnected along at least peripheral edges and intermediate said edges to define an annular chamber therebetween with a support member secured to one sheet to prevent sliding on a support surface, said chamber having a liquid medium therein in a mobile state and free to move therein, said liquid medium having at least one discrete article suspended therein manipulatable by causing displacement of said liquid medium to move said discrete articles in said chamber.
Claim 3
Dependent Claim
16 words
An article of manufacture as defined in claim 1, in which said annular chamber is circular.
Claim 4
Dependent Claim
64 words
A placemat comprising a pair of superimposed pliable plastic sheets having heat-sealed peripheral edges and being heat sealed between said edges to define an elongated channel having a liquid medium therein, at least one movable object in said channel with said liquid medium providing the driving force for said movable object when said liquid medium is displaced by contact with one of said sheets.
Claim 5
Dependent Claim
64 words
A placemat comprising a pair of superimposed pliable plastic sheets having heat-sealed peripheral edges and being heat sealed between said edges to define an elongated channel having a liquid medium therein, at least one movable object in said channel with said liquid medium providing the driving force for said movable object when said liquid medium is displaced by contact with one of said sheets.
References Cited (Backward Citations)
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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) | 1991-04-19 | 1991-10-19 | 1992-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-19 | 1995-10-19 | 1996-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-19 | 1999-10-19 | 2000-04-19 | $7700.00 | Window Closed / Lapsed |