Nitrogen service supply system
US-11014039-B2 · May 25, 2021 · US
This page is not indexed by search engines while we improve data quality.
Carbon based materials
Carbon based materials · 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 | C01B21/0461 |
| Official title | {Carbon based materials} |
| Display label | Carbon based materials |
| Total patents | 8 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears to be growing based on the most recent years.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Refrigerator
US-10966442-B2 · Apr 6, 2021 · US
Refrigerating and freezing device
US-10890369-B2 · Jan 12, 2021 · US
Carbon molecular sieve adsorbent
US-10835856-B2 · Nov 17, 2020 · US
Improved Carbon Molecular Sieve Adsorbent
US-2020054986-A1 · Feb 20, 2020 · US
Refrigerator
US-2019150484-A1 · May 23, 2019 · US
Refrigerating and freezing device
US-2019145691-A1 · May 16, 2019 · US
Method for producing nitrogen gas, method for separating gas and device for producing nitrogen gas
US-9359203-B2 · Jun 7, 2016 · US