Patent US4917292A successfully refreshed from Google Patents.
US4917292A
Expired / Lapsed
US
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Book on a pocket card
Assignee: LaserCard Corp
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Filing: 1988-04-21
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Granted: 1990-04-17
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Expires: 2008-04-21
Abstract
Abstract A plastic card or credit card size has a strip of optical recording material thereon containing microtext. The microtext is either electronically or optically reduced from 5 to 200 times and laid out in miniature pages, arranged in an array on the strip. The strip has a metallic or metal particle layer, giving it a shiny gold or silver coloration, against which the microtext appears dark, or vice-versa.
Inventors
- 👤 Jerome Drexler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:15
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/002; G11B7/0033; Y; Y10; Y10S; Y10S283/00; Y10S283/904
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
153 words
A microtext card and jacket comprising, an opaque card the size of a credit card having a planar surface, a reflective, metal-containing optically recorded material disposed over the surface of the card, the optically recorded material including unrecorded areas having a distinctive metallic-like reflectance, said optically recorded material further having an array of pages thereon, said pages having lines of microscopic text, with the pages of text reduced from normal book size by 5 to 200 times, the text having optical contrast relative to surrounding areas under light illumination sufficient for reading with magnification, whereby the contents of a book may be recorded on the card, a transparent protective plastic material bonded to the optically recorded material, and a foldable card jacket having a pocket containing said microtext card, the pocket having an outside opaque surface through which the card is not visible and an inside transparent surface where the card is visible.
Claim 2
Dependent Claim
153 words
A microtext card and jacket comprising, an opaque card the size of a credit card having a planar surface, a reflective, metal-containing optically recorded material disposed over the surface of the card, the optically recorded material including unrecorded areas having a distinctive metallic-like reflectance, said optically recorded material further having an array of pages thereon, said pages having lines of microscopic text, with the pages of text reduced from normal book size by 5 to 200 times, the text having optical contrast relative to surrounding areas under light illumination sufficient for reading with magnification, whereby the contents of a book may be recorded on the card, a transparent protective plastic material bonded to the optically recorded material, and a foldable card jacket having a pocket containing said microtext card, the pocket having an outside opaque surface through which the card is not visible and an inside transparent surface where the card is visible.
Claim 3
Dependent Claim
18 words
The microtext card of claim 1 wherein said metallic-like reflectance is one of gold or silver in color.
References Cited (Backward Citations)
US4316073A
Cited
US4159417A
Cited
US4141400A
Cited
US4236332A
Cited
US4544181A
Cited
US4503135A
Cited
US4680459A
Cited
US4486870A
Cited
US4588665A
Cited
US4790566A
Cited
US4656346A
Cited
US4700840A
Cited
US4632428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-16 | 1993-10-16 | 1994-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-16 | 1997-10-16 | 1998-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-16 | 2001-10-16 | 2002-04-17 | $7700.00 | Window Closed / Lapsed |