Poly-octavinyl polyhedral oligomeric silsesquioxane-acrylic acid nano composite auxiliary agent for leather and preparation method therefor
US-10676798-B2 · Jun 9, 2020 · US
This page is not indexed by search engines while we improve data quality.
Fixing tanning agents in the leather
Fixing tanning agents in the leather · 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 | C14C9/04 |
| Official title | Fixing tanning agents in the leather |
| Display label | Fixing tanning agents in the leather |
| Total patents | 4 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears to be declining based on the most recent years.
| Year | Patents |
|---|---|
| 2017 | 1 |
| 2019 | 2 |
| 2020 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Poly-octavinyl polyhedral oligomeric silsesquioxane-acrylic acid nano composite auxiliary agent for leather and preparation method therefor
US-2019284650-A1 · Sep 19, 2019 · US
Leather or leather article and method for producing same, hexavalent chromium treatment agent, method for treating hexavalent chromium in crude leather or crude leather article
US-10358686-B2 · Jul 23, 2019 · US
Leather or leather article and method for producing same, hexavalent chromium treatment agent, method for treating hexavalent chromium in crude leather or crude leather article
US-2017233835-A1 · Aug 17, 2017 · US