Polymer composition and heat-shrinkable article
US-10035910-B2 · Jul 31, 2018 · US
Polyesters
Polyesters · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01B3/421 |
| Official title | {Polyesters} |
| Display label | Polyesters |
| Total patents | 165 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 20 |
| 2017 | 26 |
| 2018 | 28 |
| 2019 | 19 |
| 2020 | 17 |
| 2021 | 15 |
| 2022 | 9 |
| 2023 | 9 |
| 2024 | 5 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electrical tracking resistance compositions, articles formed therefrom, and methods of manufacture thereof
US-2018051173-A1 · Feb 22, 2018 · US
Bio-based conformal coating for sulfur sequestration using polyhydroxyalkanoates
US-2017372814-A1 · Dec 28, 2017 · US
Wire harness
US-9824792-B2 · Nov 21, 2017 · US
Methods for manufacturing an insulated busbar
US-2017301434-A1 · Oct 19, 2017 · US
Heat-resistant and oil-resistant insulated electric wire
US-2017256337-A1 · Sep 7, 2017 · US
Electrolyte material composition and method
US-2017253777-A1 · Sep 7, 2017 · US
Dielectric material with enhanced breakdown strength
US-2017250008-A1 · Aug 31, 2017 · US
Wire harness
US-2017243673-A1 · Aug 24, 2017 · US
Core material for vacuum insulator, comprising organic synthetic fiber, and vacuum insulator containing same
US-9734933-B2 · Aug 15, 2017 · US
Cable for down hole pump
US-9734936-B2 · Aug 15, 2017 · US
Electronic device and method for manufacturing the same
US-9735498-B2 · Aug 15, 2017 · US
Battery
US-9718997-B2 · Aug 1, 2017 · US
Insulation film and flexible flat cable
US-2017207002-A1 · Jul 20, 2017 · US
Resin composition for wire covering material, insulated wire, and wiring harness
US-9701837-B2 · Jul 11, 2017 · US
Strain gauge polymer comprising photochromic colorant
US-2017186514-A1 · Jun 29, 2017 · US
Electronic device and method for manufacturing the same
US-2017187144-A1 · Jun 29, 2017 · US
Rectangular insulated wire and electric generator coil
US-9691521-B2 · Jun 27, 2017 · US
Flame retardant thermoplastic composition of polycarbonate and polypropylene
US-9672954-B2 · Jun 6, 2017 · US
Coating process with self-crosslinkable composition for electrical steel sheet
US-9657192-B2 · May 23, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01B3/421?
- CPC H01B3/421 is the Cooperative Patent Classification code for “Polyesters.”
- How many patents are filed under CPC H01B3/421 (Polyesters)?
- Our database includes 165 publications tagged with this CPC code.
- Is patent activity under CPC H01B3/421 growing?
- Publication counts under this code: 5 in 2024 vs 5 in 2025 (latest complete years).