Phosphorus-containing cellulose esters, methods for their preparation, their use, and flame retardants
US-2022332852-A1 · Oct 20, 2022 · US
Preparation of cellulose esters of inorganic acids {, e.g. phosphates (rendering cellulose suitable for esterification C08B1/02)}
Preparation of cellulose esters of inorganic acids {, e.g. phosphates (rendering cellulose suitable for esterification C08B1/02)} · 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 | C08B5/00 |
| Official title | Preparation of cellulose esters of inorganic acids {, e.g. phosphates (rendering cellulose suitable for esterification C08B1/02)} |
| Display label | Preparation of cellulose esters of inorganic acids {, e.g. phosphates (rendering cellulose suitable for esterification C08B1/02)} |
| Total patents | 77 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 3 |
| 2017 | 3 |
| 2018 | 6 |
| 2019 | 6 |
| 2020 | 16 |
| 2021 | 17 |
| 2022 | 7 |
| 2023 | 9 |
| 2024 | 3 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fine cellulose fiber and method for producing same
US-11441243-B2 · Sep 13, 2022 · US
Sheet
US-11346053-B2 · May 31, 2022 · US
Method for producing cellulose fibers, cellulose fiber-dispersed solution, and sheet
US-2022074143-A1 · Mar 10, 2022 · US
Fine cellulose fiber-containing substance, method for manufacturing the same, and fine cellulose fiber dispersion
US-11220787-B2 · Jan 11, 2022 · US
Fibrous cellulose, fibrous cellulose dispersion, and production method for fibrous cellulose
US-2022002442-A1 · Jan 6, 2022 · US
Gas-barrier composition
US-2021395495-A1 · Dec 23, 2021 · US
Fine cellulose fiber and method for producing same
US-2021380724-A1 · Dec 9, 2021 · US
Phosphoric acid-esterified fine cellulose fiber and method for producing the same
US-2021284755-A1 · Sep 16, 2021 · US
Method for producing fibrous cellulose, and fibrous cellulose
US-11111631-B2 · Sep 7, 2021 · US
Cellulose fiber-containing composition, liquid composition, and molded body
US-2021253830-A1 · Aug 19, 2021 · US
Cellulose fiber-containing material, fluffed cellulose, and composition
US-2021253744-A1 · Aug 19, 2021 · US
Material comprising ultrafine cellulose fibers
US-11084886-B2 · Aug 10, 2021 · US
Cellulose fiber-containing composition and sheet
US-2021222366-A1 · Jul 22, 2021 · US
Cellulose fiber-containing composition
US-2021222367-A1 · Jul 22, 2021 · US
Phosphoric acid-esterified fine cellulose fiber and method for producing the same
US-11053324-B2 · Jul 6, 2021 · US
Cellulose microfibers and method for manufacturing the same
US-2021189637-A1 · Jun 24, 2021 · US
Resin composite and method for producing resin composite
US-11034806-B2 · Jun 15, 2021 · US
Fine cellulose fiber-containing substance, method for manufacturing the same, and fine cellulose fiber dispersion
US-2021156090-A1 · May 27, 2021 · US
Cellulose fiber-containing composition, production method thereof, and film
US-2021122932-A1 · Apr 29, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08B5/00?
- CPC C08B5/00 is the Cooperative Patent Classification code for “Preparation of cellulose esters of inorganic acids {, e.g. phosphates (rendering cellulose suitable for esterification C08B1/02)}.”
- How many patents are filed under CPC C08B5/00 (Preparation of cellulose esters of inorganic acids {, e.g. phosphates (rendering cellulose suitable for esterification C08B1/02)})?
- Our database includes 77 publications tagged with this CPC code.
- Is patent activity under CPC C08B5/00 growing?
- Publication counts under this code: 3 in 2024 vs 3 in 2025 (latest complete years).