US4497872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed identification card with blocking layers
Assignee: GAO Gesellschaft fuer Automation und Organisation mbH
•
Filing: 1984-03-12
•
Granted: 1985-02-05
•
Expires: 2004-03-12
Abstract
Abstract An identification card protected against external chemical influences of the environment, having blocking layers in its outer areas to prevent plasticizers and other chemical substances which reduce stability and durability from penetrating inside the card. The blocking layers consisting of PETP (polyethylene terephtalate), PE (polyethylene), paper or other chemically resistant materials are located on the surface of the card, preferably in compound films with the construction PVC/blocking layer/PVC, between which the card core bearing the personalization data is laminated in. Thus partial embeddings such as signature stripes, magnetic stripes, photos, etc. can also be provided in the surface layer, the inner PVC layers of the card still being optimally protected by the blocking layers against the negative consequences of the influence of plasticizers, such as fatigue fracture and bending tears.
Inventors
- 👤 Joachim Hoppe
- 👤 Wolfgang Gauch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:01
CPC Classifications
B; B42; B42D; B42D25/00; B32; B32B; B32B27/00; B32B27/30; B32B27/304; B32B27/06; B32B27/08; B32B7/00; B32B7/04; B32B7/06; B32B7/12; B42D25/20; B42D25/23; B42D25/40; B42D25/45; B32B2425/00; B42D2033/28; B42D2033/30; Y; Y10; Y10S; Y10S283/00; Y10S283/904; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24851; Y10T428/24868; Y10T428/31504; Y10T428/31786; Y10T428/31797; Y10T428/31844; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906; Y10T428/31909; Y10T428/31913; Y10T428/3192; Y10T428/31928
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
75 words
A multilayered identification card having an inner layer made of polyvinyl chloride and cover films on each side of the inner layer in the form of compound films having the structure polyvinyl chloride/blocking layer/polyvinyl chloride, wherein the thickness of said blocking layer is small compared to that of the card, whereby said blocking layer prevents the penetration of plasticizers into the inner layer of the card without adversely affecting the embossing properties of the card.
Claim 2
Dependent Claim
75 words
A multilayered identification card having an inner layer made of polyvinyl chloride and cover films on each side of the inner layer in the form of compound films having the structure polyvinyl chloride/blocking layer/polyvinyl chloride, wherein the thickness of said blocking layer is small compared to that of the card, whereby said blocking layer prevents the penetration of plasticizers into the inner layer of the card without adversely affecting the embossing properties of the card.
Claim 3
Dependent Claim
17 words
An identification card according to claim 1, wherein said blocking layer consists of a polyethylene terephthalate film.
Claim 4
Dependent Claim
17 words
An identification card accorrding to claim 1, wherein said blocking layer consists of a polyethylene adhesive layer.
Claim 5
Dependent Claim
18 words
An identification card according to claim 1, wherein said blocking layer consists of a thin sheet of paper.
Claim 6
Dependent Claim
17 words
An identification card according to claim 1, wherein said blocking layer consists of a thin varnish coating.
Claim 7
Independent Claim
69 words
A method of producing an identification card comprising a core made of polyvinyl chloride which bears at least a portion of the identification data and cover films on each side of the core in the form of compound films having the structure polyvinyl chloride/blocking layer/polyvinyl chloride, wherein the thickness of said blocking layer is small compared to that of the card, comprising laminating said core between said cover films.
Claim 8
Independent Claim
69 words
A method of producing an identification card comprising a core made of polyvinyl chloride which bears at least a portion of the identification data and cover films on each side of the core in the form of compound films having the structure polyvinyl chloride/blocking layer/polyvinyl chloride, wherein the thickness of said blocking layer is small compared to that of the card, comprising laminating said core between said cover films.
References Cited (Backward Citations)
US2712514A
Cited
US2932913A
Cited
US3402488A
Cited
US3716439A
Cited
US3887757A
Cited
US4105818A
Cited
US4096015A
Cited
US4170681A
Cited
FR2451081A1
Cited
US4284681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-05 | 1988-08-06 | 1989-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-05 | 1992-08-06 | 1993-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-05 | 1996-08-06 | 1997-02-05 | $7700.00 | Window Closed / Lapsed |