Preform provided with a concave body portion
US-2018361648-A1 · Dec 20, 2018 · US
at bottom portion
at bottom portion · 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 | B29C2949/28 |
| Official title | at bottom portion |
| Display label | at bottom portion |
| Total patents | 176 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 13 |
| 2017 | 17 |
| 2018 | 22 |
| 2019 | 10 |
| 2020 | 13 |
| 2021 | 15 |
| 2022 | 14 |
| 2023 | 16 |
| 2024 | 22 |
| 2025 | 14 |
| 2026 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Preform with a concave bottom and an evolving thickness
US-2018361624-A1 · Dec 20, 2018 · US
Preform Extended Finish For Processing Light Weight Ecologically Beneficial Bottles
US-2018327132-A1 · Nov 15, 2018 · US
Resin bottle and method for making the same
US-2018326647-A1 · Nov 15, 2018 · US
System and method for forming a container having a grip region
US-10118331-B2 · Nov 6, 2018 · US
Preform extended finish for processing light weight ecologically beneficial bottles
US-10118724-B2 · Nov 6, 2018 · US
Container with synthetic resin window, preform, and preform injection molding apparatus
US-10086551-B2 · Oct 2, 2018 · US
Container with synthetic resin window, preform, and preform injection molding apparatus
US-10086978-B2 · Oct 2, 2018 · US
Preform coating device and preform coating method
US-2018264517-A1 · Sep 20, 2018 · US
Injection-molded preform for the production of a plastics container in a blow-molding process, plastics container produced therefrom, and production method for the preform and/or the plastics container
US-2018229417-A1 · Aug 16, 2018 · US
Device for injection molding preform, injection molding process, and synthetic resin bottle
US-2018215115-A1 · Aug 2, 2018 · US
Stretch blow molding process
US-2018186056-A1 · Jul 5, 2018 · US
Method for producing a plastic bottle, and preform and blowing mold suited therefor
US-10011064-B2 · Jul 3, 2018 · US
Plastic bottle with a champagne base and production methods thereof
US-2018127137-A1 · May 10, 2018 · US
Method for the production of pouches, and blow-molded pouch
US-9925710-B2 · Mar 27, 2018 · US
Preform, container and method for forming a container
US-9895826-B2 · Feb 20, 2018 · US
Container with synthetic resin window, preform, and preform injection molding apparatus
US-2018009150-A1 · Jan 11, 2018 · US
Container with synthetic resin window, preform, and preform injection molding apparatus
US-2018009151-A1 · Jan 11, 2018 · US
Gas barrier enhancing additives and methods
US-2017349317-A1 · Dec 7, 2017 · US
Preform for biaxial stretching blow molding, and container
US-2017326779-A1 · Nov 16, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B29C2949/28?
- CPC B29C2949/28 is the Cooperative Patent Classification code for “at bottom portion.”
- How many patents are filed under CPC B29C2949/28 (at bottom portion)?
- Our database includes 176 publications tagged with this CPC code.
- Is patent activity under CPC B29C2949/28 growing?
- Publication counts under this code: 22 in 2024 vs 14 in 2025 (latest complete years).