Patents
US 11798713 B2: Electrically conductive PTC ink with double switching temperatures
- Granted
- 2023-10-24
- Filed
- 2022-03-14 application 17693722
- Type
- Utility · 15 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A positive temperature coefficient (PTC) composition having a first thermally active polymer having a melting point of 30-70° C. and providing a first PTC in a lower temperature range below 70° C., and a second thermally active polymer having a melting point of 70-140° C. and providing a second PTC in a higher temperature range above 70° C., the composition also having conductive particles; and an organic solvent with a boiling point higher than 100° C., solvent being capable of dissolving both the first and second thermally active polymer. The PTC composition has two distinct PTC characteristics at the two different temperature ranges.
Source: PVGPATDIS, file of 2026-04-10 (ipg231024.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| LMS Co., Ltd. 85 patents | Foreign company or organization | Marion, OH | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Shuyong Xiao | Ferme-Neuve, CA | 20 | PVGPATDIS, file of 2026-04-10 | |
| Lee M. Sisler | Marion, OH | 4 | PVGPATDIS, file of 2026-04-10 | |
| Richard C. Abbott | New Boston, NH | 14 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H01C | Resistors | H01C7/02 | PVGPATDIS, file of 2026-04-10 |
| A41D | Outerwear; protective garments; accessories | A41D13/0051 | PVGPATDIS, file of 2026-04-10 |
| C09D | Coating compositions, e.g. paints, varnishes or lacquers; filling pastes; chemical paint or ink removers; inks; correcting fluids; woodstains; pastes or solids for colouring or printing; use of materials therefor | C09D11/037 | PVGPATDIS, file of 2026-04-10 |
| E04C | Structural elements; building materials | E04C2/525 | PVGPATDIS, file of 2026-04-10 |
| F25C | Producing, working or handling ice | F25C1/22 | PVGPATDIS, file of 2026-04-10 |
| H05B | Electric heating; electric light sources not otherwise provided for; circuit arrangements for electric light sources, in general | H05B3/12 | PVGPATDIS, file of 2026-04-10 |
| H10D | Inorganic electric semiconductor devices | H10D1/47 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2022-03-14 | Assignment Assignment of assignor's interest | XIAO, SHUYONG signed 2017-05-04 ABBOTT, RICHARD C. signed 2017-08-07 SISLER, LEE M. signed 2017-08-14 | LMS CONSULTING GROUP, LLC MARION, OH | 59254/797 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.