Refill system and spout and methods of using the same
US-12534246-B2 · Jan 27, 2026 · US
having air-escape, or air-withdrawal, passages
having air-escape, or air-withdrawal, passages · 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 | B65B39/04 |
| Official title | having air-escape, or air-withdrawal, passages |
| Display label | having air-escape, or air-withdrawal, passages |
| Total patents | 31 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 4 |
| 2017 | 6 |
| 2018 | 4 |
| 2020 | 4 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 2 |
| 2025 | 6 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Apparatus for capactitive liquid sensing of refillable articles for aerosol provision systems
US-2025256872-A1 · Aug 14, 2025 · US
Rotatable apparatuses and methods of operating the same
US-2025162750-A1 · May 22, 2025 · US
Apparatus and method for packaging loose product
US-2025100723-A1 · Mar 27, 2025 · US
Refilling device with venting nozzle, and refilling apparatus
US-2025017286-A1 · Jan 16, 2025 · US
Apparatus and method of packaging loose product
US-12195218-B2 · Jan 14, 2025 · US
Refill system and spout and methods of using the same
US-2025002189-A1 · Jan 2, 2025 · US
Apparatus and method of packaging loose product
US-2023382573-A1 · Nov 30, 2023 · US
Method of packaging including covering an opening of a chute using a lid
US-11724839-B2 · Aug 15, 2023 · US
Adapters for refilling an aerosol delivery device
US-11412781-B2 · Aug 16, 2022 · US
Filling element and filling machine
US-10968091-B2 · Apr 6, 2021 · US
Systems and methods for filling and sealing vials
US-10807743-B2 · Oct 20, 2020 · US
Method of packaging including covering an opening of a chute using a lid
US-2020290758-A1 · Sep 17, 2020 · US
Apparatus and method of packaging loose product
US-10683110-B2 · Jun 16, 2020 · US
Pierce and fill device
US-10625095-B2 · Apr 21, 2020 · US
Filling device for filling a medical bag, method for producing such a device and plant for producing fluid-filled medical bags
US-2018235837-A1 · Aug 23, 2018 · US
Filling device
US-2018222615-A1 · Aug 9, 2018 · US
Vacuum assisted nozzle and apparatus
US-10023333-B2 · Jul 17, 2018 · US
Apparatus and method of packaging loose product
US-2018105295-A1 · Apr 19, 2018 · US
Apparatus and method of packaging loose product
US-9845169-B2 · Dec 19, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B65B39/04?
- CPC B65B39/04 is the Cooperative Patent Classification code for “having air-escape, or air-withdrawal, passages.”
- How many patents are filed under CPC B65B39/04 (having air-escape, or air-withdrawal, passages)?
- Our database includes 31 publications tagged with this CPC code.
- Is patent activity under CPC B65B39/04 growing?
- Publication counts under this code: 2 in 2023 vs 6 in 2025 (latest complete years).