Vent stuffer for extruder and extrusion apparatus
US-2026084360-A1 · Mar 26, 2026 · US
having grooves or cavities
having grooves or cavities · 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 | B29C48/686 |
| Official title | {having grooves or cavities} |
| Display label | having grooves or cavities |
| Total patents | 37 |
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 | 2 |
| 2017 | 2 |
| 2018 | 4 |
| 2019 | 8 |
| 2020 | 5 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 5 |
| 2025 | 1 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Advanced visco-seals for single screw extruders
US-2026042250-A1 · Feb 12, 2026 · US
Extrusion method and apparatus
US-12325047-B2 · Jun 10, 2025 · US
Extruder system
US-11780144-B2 · Oct 10, 2023 · US
Continuous cycle systems and methods for moulding single objects from plastic material
US-2023271370-A1 · Aug 31, 2023 · US
Extrusion method and apparatus
US-2023201873-A1 · Jun 29, 2023 · US
Extrusion method and apparatus
US-11590530-B2 · Feb 28, 2023 · US
Method for manufacturing pressure-sensitive sensor, pressure-sensitive sensor manufacturing equipment, and pressure-sensitive sensor
US-11555754-B2 · Jan 17, 2023 · US
Housing component for a multi-shaft screw machine and method for the production of a housing component
US-11478970-B2 · Oct 25, 2022 · US
Masterbatch manufacturing method and tire manufacturing method
US-11319429-B2 · May 3, 2022 · US
Extruder system
US-2021206044-A1 · Jul 8, 2021 · US
Device and method for dispersing solids, liquids and gases in an extruder
US-11045977-B2 · Jun 29, 2021 · US
Method for manufacturing pressure-sensitive sensor, pressure-sensitive sensor manufacturing equipment, and pressure-sensitive sensor
US-2021055176-A1 · Feb 25, 2021 · US
Method for manufacturing pressure-sensitive sensor, pressure-sensitive sensor manufacturing equipment, and pressure-sensitive sensor
US-10866155-B2 · Dec 15, 2020 · US
Extrusion method and apparatus
US-2020324317-A1 · Oct 15, 2020 · US
Masterbatch manufacturing method and tire manufacturing method
US-2020190291-A1 · Jun 18, 2020 · US
Multi-shaft kneading machine
US-10675600-B2 · Jun 9, 2020 · US
Housing component for the production of a housing of a multi-shaft screw machine and method for the production of a housing component
US-2020055226-A1 · Feb 20, 2020 · US
Rubbery polymer extrusion dryer, method of drying rubbery polymer, and method of manufacturing rubbery polymer
US-2019255739-A1 · Aug 22, 2019 · US
Elongated fluoroelastomeric articles and methods of making the same
US-2019248057-A1 · Aug 15, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B29C48/686?
- CPC B29C48/686 is the Cooperative Patent Classification code for “having grooves or cavities.”
- How many patents are filed under CPC B29C48/686 (having grooves or cavities)?
- Our database includes 37 publications tagged with this CPC code.
- Is patent activity under CPC B29C48/686 growing?
- Publication counts under this code: 5 in 2023 vs 1 in 2025 (latest complete years).