Patent US4677259A successfully refreshed from Google Patents.
US4677259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Position determination device
Assignee: Pentel Co Ltd
•
Filing: 1986-03-31
•
Granted: 1987-06-30
•
Expires: 2006-03-31
Abstract
Abstract A data tablet has an electrode matrix that includes two sets of electrodes, the sets of electrodes being arranged along coordinate axes on opposite sides of an intermediate insulating layer in such a way that the electrodes in one set are orthogonal to the electrodes in the other set. The electrodes of each of said sets constituting a first group and a second group, the electrodes in said first group being connected respectively to leading lines arranged in the same plane as of said electrodes in said first group, and the electrodes in said second group being connected via through-holes formed in said intermediate insulating layer respectively to other leader lines arranged in the same plane as of said electrodes of the other set. The data tablet can be produced by forming a first circuit pattern on a substrate of an electrical insulating material by printing, then printing an insulating pattern on the substrate thereby forming the intermediate insulating layer overlaid on the first circuit pattern, and printing a second circuit pattern on the intermediate insulating layer. When the second circuit pattern is printed, the parts of said pattern on the apertures in the intermediate insulating layer overlie the first circuit pattern under the intermediate insulating layer.
Inventors
- 👤 Kiyomi Abe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:14
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/041; G06F3/046; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
250 words
A method of producing a data tablet including two sets of electrodes that are arranged along coordinate axes orthogonally, the electrodes of each set being divided into a first group and a second group, which method comprises the following steps: a. preparing a substrate of an electrically insulating material, b. forming a first circuit pattern on said substrate, the first circuit pattern including the electrodes of one of said sets, leader lines for the electrodes of the first group of said one set, and leader lines for the electrodes of the second group of the other set, c. forming an insulating pattern on said substrate by printing so as to form an intermediate insulating layer that will overlie said first circuit pattern, said insulating pattern including apertures for electrically connecting the electrodes of said second groups of said sets to the leader lines related thereto, and d. forming a second circuit pattern on said intermediate insulating layer by printing, said second circuit pattern including the electrodes of said other set, leader lines for said electrodes of the first group of said other set, and leader lines for the electrodes of the second group of said one set, and in which method when said second circuit pattern is printed, parts of said second circuit pattern positioned over said apertures of said insulating pattern forming said intermediate insulating layer are overlaid on parts of said first circuit pattern under the intermediate insulating layer thereby connecting said first and second mentioned parts electrically.
Claim 2
Independent Claim
250 words
A method of producing a data tablet including two sets of electrodes that are arranged along coordinate axes orthogonally, the electrodes of each set being divided into a first group and a second group, which method comprises the following steps: a. preparing a substrate of an electrically insulating material, b. forming a first circuit pattern on said substrate, the first circuit pattern including the electrodes of one of said sets, leader lines for the electrodes of the first group of said one set, and leader lines for the electrodes of the second group of the other set, c. forming an insulating pattern on said substrate by printing so as to form an intermediate insulating layer that will overlie said first circuit pattern, said insulating pattern including apertures for electrically connecting the electrodes of said second groups of said sets to the leader lines related thereto, and d. forming a second circuit pattern on said intermediate insulating layer by printing, said second circuit pattern including the electrodes of said other set, leader lines for said electrodes of the first group of said other set, and leader lines for the electrodes of the second group of said one set, and in which method when said second circuit pattern is printed, parts of said second circuit pattern positioned over said apertures of said insulating pattern forming said intermediate insulating layer are overlaid on parts of said first circuit pattern under the intermediate insulating layer thereby connecting said first and second mentioned parts electrically.
Claim 3
Dependent Claim
46 words
A method of producing a data tablet according to claim 1, characterised in that said first circuit pattern and said second circuit pattern are made of an electrically conductive ink containing an electrically conductive material selected from carbon and silver powder and a phenolic type resin.
Claim 4
Dependent Claim
24 words
A method of producing a data tablet according to claim 1, characterized in that said insulating pattern is made of a bismaleimide triazine resin.
Claim 5
Dependent Claim
128 words
A data tablet, characterized in that it has an electrode matrix that includes two sets of electrodes, the sets of electrodes being arranged along coordinate axes on opposite sides of an intermediate insulating layer in such a way that the electrodes in one set are orthogonal to the electrodes in the other set, the electrodes of each of said sets constituting a first group and a second group, the electrodes in said first group being connected respectively to leading lines arranged in the same plane as of said electrodes in said first group, and the electrodes in said second group being connected via through-holes formed in said intermediate insulating layer respectively to other leader lines arranged in the same plane as of said electrodes of the other set.
Claim 6
Dependent Claim
128 words
A data tablet, characterized in that it has an electrode matrix that includes two sets of electrodes, the sets of electrodes being arranged along coordinate axes on opposite sides of an intermediate insulating layer in such a way that the electrodes in one set are orthogonal to the electrodes in the other set, the electrodes of each of said sets constituting a first group and a second group, the electrodes in said first group being connected respectively to leading lines arranged in the same plane as of said electrodes in said first group, and the electrodes in said second group being connected via through-holes formed in said intermediate insulating layer respectively to other leader lines arranged in the same plane as of said electrodes of the other set.
Claim 7
Dependent Claim
21 words
A data tablet according to claim 4, characterised in that said intermediate insulating layer is made of a bismaleimide triazine resin.
References Cited (Backward Citations)
US4455452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-29 | 1990-12-29 | 1991-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-29 | 1994-12-29 | 1995-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-29 | 1998-12-29 | 1999-06-30 | $7700.00 | Window Closed / Lapsed |