Method of manufacturing leather
US-12163197-B2 · Dec 10, 2024 · US
Multi-step processes
Multi-step processes · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C14C3/28 |
| Official title | Multi-step processes |
| Display label | Multi-step processes |
| Total patents | 29 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 3 |
| 2017 | 3 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 5 |
| 2021 | 1 |
| 2022 | 4 |
| 2023 | 1 |
| 2024 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for dyeing of leather
US-2024360524-A1 · Oct 31, 2024 · US
Chrome-free tanning process of ecological leather
US-12129524-B2 · Oct 29, 2024 · US
Chrome-free tanning process of ecological leather
US-2024263257-A1 · Aug 8, 2024 · US
Method for dyeing and/or retanning of leather
US-12049676-B2 · Jul 30, 2024 · US
Immortalized cell line for engineered synthetic leather
US-2024043805-A1 · Feb 8, 2024 · US
Cationic cyanuric chloride derivative tanning agent and preparation method thereof
US-11702712-B2 · Jul 18, 2023 · US
Chrome-free leather retanning
US-11473156-B2 · Oct 18, 2022 · US
Method of manufacturing leather
US-2022243292-A1 · Aug 4, 2022 · US
Method for dyeing and/or retanning of leather
US-2022220571-A1 · Jul 14, 2022 · US
Cationic cyanuric chloride derivative tanning agent and preparation method thereof
US-2022220569-A1 · Jul 14, 2022 · US
A process for tanning animal hides
US-2021332450-A1 · Oct 28, 2021 · US
Solid, particulate tanning agent preparations
US-10870896-B2 · Dec 22, 2020 · US
Chrome-free leather retanning
US-2020385825-A1 · Dec 10, 2020 · US
Method for treating a substrate made of animal fibers with solid particles and a chemical formulation
US-10745769-B2 · Aug 18, 2020 · US
Poly-octavinyl polyhedral oligomeric silsesquioxane-acrylic acid nano composite auxiliary agent for leather and preparation method therefor
US-10676798-B2 · Jun 9, 2020 · US
Method for producing hydrophobising leather treatment agents
US-2020071779-A1 · Mar 5, 2020 · US
Poly-octavinyl polyhedral oligomeric silsesquioxane-acrylic acid nano composite auxiliary agent for leather and preparation method therefor
US-2019284650-A1 · Sep 19, 2019 · US
Method for treating an animal substrate
US-10301691-B2 · May 28, 2019 · US
Chrome-free leather retanning
US-9970070-B2 · May 15, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C14C3/28?
- CPC C14C3/28 is the Cooperative Patent Classification code for “Multi-step processes.”
- How many patents are filed under CPC C14C3/28 (Multi-step processes)?
- Our database includes 29 publications tagged with this CPC code.
- Is patent activity under CPC C14C3/28 growing?
- Publication counts under this code: 1 in 2023 vs 6 in 2024 (latest complete years).