Patent US4276334A successfully refreshed from Google Patents.
US4276334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure sensitive recording sheet
Assignee: General Co Ltd
•
Filing: 1978-11-27
•
Granted: 1981-06-30
•
Expires: 1998-11-27
Abstract
Abstract A pressure sensitive member comprises a base sheet and an opaque pressure clarifiable layer overlying the substrate and the color of the substrate being different from that of the opaque clarifiable layer.
Inventors
- 👤 Tetsuo Sugihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:11
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; Y; Y10; Y10S; Y10S428/00; Y10S428/908; Y10S428/913; Y10T; Y10T428/00; Y10T428/14; Y10T428/1424; Y10T428/1429; Y10T428/28; Y10T428/2848; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
65 words
A pressure sensitive recording sheet consisting of a single opaque pressure clarifiable layer composed only of non-porous unbaked polytetrafluoroethylene, a support sheet under said pressure clarifiable layer, and a layer of adhesive disposed between said pressure clarifiable layer and said support sheet, either one of said layer of adhesive or said support sheet having a color contrasting with the color of said pressure clarifiable layer.
Claim 2
Dependent Claim
65 words
A pressure sensitive recording sheet consisting of a single opaque pressure clarifiable layer composed only of non-porous unbaked polytetrafluoroethylene, a support sheet under said pressure clarifiable layer, and a layer of adhesive disposed between said pressure clarifiable layer and said support sheet, either one of said layer of adhesive or said support sheet having a color contrasting with the color of said pressure clarifiable layer.
Claim 3
Dependent Claim
22 words
A pressure sensitive recording sheet according to claim 1, wherein a transparent protective layer is provided on the opaque pressure clarifiable layer.
Claim 4
Dependent Claim
33 words
A pressure sensitive recording sheet according to claim 1 or 2, wherein a second adhesive layer is disposed under said support sheet and a release layer is disposed under said second adhesive layer.
Claim 5
Dependent Claim
26 words
A pressure sensitive recording sheet according to claim 1, wherein said layer of adhesive has a color contrasting with the color of said pressure clarifiable layer.
Claim 6
Dependent Claim
30 words
A pressure sensitive recording sheet according to claim 1, wherein said adhesive is transparent and said support sheet has a color contrasting with the color of said pressure clarifiable layer.
Claim 7
Dependent Claim
60 words
A pressure sensitive recording sheet consisting of a single opaque pressure clarifiable layer composed only of non-porous unbaked polytetrafluoroethylene, a support sheet under said pressure clarifiable layer, and a layer of adhesive disposed under said support sheet, either one of said layer of adhesive or said support sheet having a color contrasting with the color of said pressure clarifiable layer.
Claim 8
Dependent Claim
60 words
A pressure sensitive recording sheet consisting of a single opaque pressure clarifiable layer composed only of non-porous unbaked polytetrafluoroethylene, a support sheet under said pressure clarifiable layer, and a layer of adhesive disposed under said support sheet, either one of said layer of adhesive or said support sheet having a color contrasting with the color of said pressure clarifiable layer.
Claim 9
Dependent Claim
32 words
A pressure sensitive recording sheet according to claim 6 wherein said support sheet is transparent and said layer of adhesive has a color contrasting with the color of said pressure clarifiable layer.
Claim 10
Dependent Claim
24 words
A pressure sensitive recording sheet according to claim 6 wherein said support sheet has a color contrasting with that of said pressure clarifiable layer.
Claim 11
Dependent Claim
22 words
A pressure sensitive recording sheet according to claim 6, wherein a transparent protective layer is provided on the opaque pressure clarifiable layer.
References Cited (Backward Citations)
US3389201A
Cited
US3542630A
Cited
US3900658A
Cited
US3953566A
Cited
US3692759A
Cited
JPS4717457U
Cited
US3753841A
Cited
US3884505A
Cited
US3887734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-06-29 | 1984-12-29 | 1985-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-29 | 1988-12-29 | 1989-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-29 | 1992-12-29 | 1993-06-30 | $7700.00 | Window Closed / Lapsed |