Diffraction light guide plate and manufacturing method thereof
US-12441843-B2 · Oct 14, 2025 · US
Compensating volume change, e.g. retraction
Compensating volume change, e.g. retraction · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B29C43/54 |
| Official title | Compensating volume change, e.g. retraction |
| Display label | Compensating volume change, e.g. retraction |
| Total patents | 33 |
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 | 3 |
| 2016 | 4 |
| 2017 | 2 |
| 2018 | 3 |
| 2019 | 3 |
| 2020 | 3 |
| 2021 | 5 |
| 2022 | 4 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
System and method for making a block for gravity energy storage
US-2025276505-A1 · Sep 4, 2025 · US
System and method for making a block for gravity energy storage
US-12090724-B2 · Sep 17, 2024 · US
System and method for making a block for gravity energy storage
US-2024198619-A1 · Jun 20, 2024 · US
Impact protection plate and a method of producing such a plate
US-2023321947-A1 · Oct 12, 2023 · US
Method for manufacturing molded article
US-11590716-B2 · Feb 28, 2023 · US
Diffraction light guide plate and manufacturing method thereof
US-2022315707-A1 · Oct 6, 2022 · US
Distributor device
US-11318645-B2 · May 3, 2022 · US
Methods and apparatuses for casting polymer products
US-11320591-B2 · May 3, 2022 · US
Optical polymer films and methods for casting the same
US-11298856-B2 · Apr 12, 2022 · US
Methods and apparatuses for casting polymer products
US-2021271025-A1 · Sep 2, 2021 · US
Methods and apparatuses for casting polymer products
US-11009661-B2 · May 18, 2021 · US
Prism, forming mold, and method of producing prism
US-10974475-B2 · Apr 13, 2021 · US
A distributor device
US-2021039288-A1 · Feb 11, 2021 · US
Method for manufacturing molded article
US-2021016474-A1 · Jan 21, 2021 · US
Compression mold
US-10682790-B2 · Jun 16, 2020 · US
Methods and apparatuses for casting polymer products
US-2020116934-A1 · Apr 16, 2020 · US
Rotary high speed low compression thermoplastic molding method and apparatus
US-2020061878-A1 · Feb 27, 2020 · US
System for manufacturing monolithic structures using expanding internal tools
US-10464239-B2 · Nov 5, 2019 · US
Optical element, and method for producing same
US-10386552-B2 · Aug 20, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B29C43/54?
- CPC B29C43/54 is the Cooperative Patent Classification code for “Compensating volume change, e.g. retraction.”
- How many patents are filed under CPC B29C43/54 (Compensating volume change, e.g. retraction)?
- Our database includes 33 publications tagged with this CPC code.
- Is patent activity under CPC B29C43/54 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).