US4547002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Credit and identification cards having pieces of diffraction grating therein
Assignee: USBC OPERATING COMPANY Inc A DE CORP
•
Filing: 1983-11-10
•
Granted: 1985-10-15
•
Expires: 2003-11-10
Abstract
Abstract An information bearing credit or identification card in which pieces of a diffraction grating, preferably an embossed hologram, are randomly distributed in a plastic or paper card so that light reflecting therefrom uniquely and visually differentiates the grating and hence the card. The pieces may be mixed in the plastic pig or with the paper prior to rolling or sprinkled in the plastic or other substrate during rolling.
Inventors
- 👤 Gilbert Colgate, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:57
CPC Classifications
B; B42; B42D; B42D25/00; B42D25/30; B42D25/328; B42D25/40; B42D25/405; B42D25/425; D; D21; D21H; D21H21/00; D21H21/14; D21H21/40; D21H21/42; B42D2033/28; B42D2033/30; B42D2035/02; Y; Y10; Y10S; Y10S283/00; Y10S283/904
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
47 words
An information bearing card with a substrate having an extended surface with a plurality of pieces of a diffraction grating randomly distributed therein and each, in response to incident light, reflecting light having unique optical characteristics uniquely and visually identifying the grating and therefore the card source.
Claim 2
Dependent Claim
47 words
An information bearing card with a substrate having an extended surface with a plurality of pieces of a diffraction grating randomly distributed therein and each, in response to incident light, reflecting light having unique optical characteristics uniquely and visually identifying the grating and therefore the card source.
Claim 3
Dependent Claim
11 words
A card as in claim 1 wherein said substrate is paper.
Claim 4
Dependent Claim
11 words
A card as in claim 1 wherein said substrate is plastic.
Claim 5
Dependent Claim
11 words
A card as in claim 3 wherein said plastic is PVC.
Claim 6
Dependent Claim
18 words
A card as in claim 1 wherein the diffraction grating is a hologram embossed on a polyester sheet.
References Cited (Backward Citations)
US3552853A
Cited
US4101701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-14 | 1989-04-15 | 1989-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-14 | 1993-04-15 | 1993-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-14 | 1997-04-15 | 1997-10-15 | $7700.00 | Window Closed / Lapsed |