Patent US4834502A successfully refreshed from Google Patents.
US4834502A
Expired / Lapsed
US
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Optical mouse pad
Assignee: Xerox Corp
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Filing: 1988-08-08
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Granted: 1989-05-30
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Expires: 2008-08-08
Abstract
Abstract A pad, used with an optical mouse, including a substantially transparent sheet having a pattern of spaced dots on one surface thereof. One surface of a bottom sheet is positioned adjacent to the surface of the transparent sheet having the dots thereon. The other surface of the bottom sheet has a coefficient of friction sufficient to minimize slippage of the pad when an optical mouse is moved therealong.
Inventors
- 👤 Robert W. Bristol
- 👤 Harry C. Burch
- 👤 Gary L. Eisenhart
- 👤 Randall R. Hube
- 👤 G. Christian Sherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:16
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/033; G06F3/039; G06F3/0395; G06F3/041; G06F3/042; G06F3/0421
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
70 words
A pad for use with an optical mouse, including: a substantially transparent sheet having a pattern of spaced dots on one surface thereof; and a bottom sheet having one surface with a coefficient of friction sufficient to minimize slippage of the pad when the optical mouse is moved therealong with the other surface thereof being positioned adjacent the surface of the transparent sheet having the pattern of spaced dots thereon.
Claim 2
Dependent Claim
70 words
A pad for use with an optical mouse, including: a substantially transparent sheet having a pattern of spaced dots on one surface thereof; and a bottom sheet having one surface with a coefficient of friction sufficient to minimize slippage of the pad when the optical mouse is moved therealong with the other surface thereof being positioned adjacent the surface of the transparent sheet having the pattern of spaced dots thereon.
Claim 3
Dependent Claim
26 words
A pad according to claim 1, wherein each dot of the pattern of dots on said one surface of said transparent sheet is substantially light reflective.
Claim 4
Dependent Claim
31 words
A pad according to claim 2, wherein the surface of said transparent sheet having the pattern of dots thereon includes a substantially light absorbing area surrounding the pattern of dots thereon.
Claim 5
Dependent Claim
24 words
A pad according to claim 3, wherein the surface of said transparent sheet having the pattern of spaced dots thereon has a matte finish.
Claim 6
Dependent Claim
26 words
A pad according to claim 4, wherein the surface of said transparent sheet opposed to the surface having the spaced dots thereon has a velvet finish.
Claim 7
Dependent Claim
20 words
A pad according to claim 5, further including a support sheet interposed between said transparent sheet and said bottom sheet.
Claim 8
Dependent Claim
22 words
A pad according to claim 6, wherein the surface of said support sheet secured to said transparent sheet has a matte finish.
Claim 9
Dependent Claim
27 words
A pad according to claim 7, wherein the surface of said support sheet opposed to the surface thereof secured to said transparent sheet has a matte finish.
Claim 10
Dependent Claim
23 words
A pad according to claim 8, wherein the pattern of spaced dots on said one surface of said transparent sheet are substantially white.
Claim 11
Dependent Claim
26 words
A pad according to claim 9, wherein the area surrounding the pattern of spaced dots on said one surface of said transparent sheet is substantially black.
Claim 12
Dependent Claim
16 words
A pad according to claim 10, wherein said transparent sheet is made from a polycarbonate material.
Claim 13
Dependent Claim
16 words
A pad according to claim 11, wherein said support sheet is made from a vinyl material.
Claim 14
Dependent Claim
21 words
A pad according to claim 12, wherein said bottom sheet is made from a mixture of a cork and rubber material.
Claim 15
Dependent Claim
17 words
A pad according to claim 12, wherein said bottom sheet is made from a foam neoprene material.
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) | 1992-05-29 | 1992-11-28 | 1993-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-29 | 1996-11-28 | 1997-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-29 | 2000-11-28 | 2001-05-30 | $7700.00 | Window Closed / Lapsed |