Amphoteric compounds
US-12516019-B2 · Jan 6, 2026 · US
This page is not indexed by search engines while we improve data quality.
by reaction with halogenosulfonic acids
by reaction with halogenosulfonic acids · 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 | C07C303/08 |
| Official title | by reaction with halogenosulfonic acids |
| Display label | by reaction with halogenosulfonic acids |
| Total patents | 20 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2017 | 2 |
| 2018 | 4 |
| 2019 | 5 |
| 2020 | 1 |
| 2022 | 4 |
| 2024 | 1 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing organic sulfonic acid compound
US-2025122151-A1 · Apr 17, 2025 · US
Production process for 3,5-di-tert-utylbenzenesulfonic acid
US-2025034086-A1 · Jan 30, 2025 · US
Renewable Bio-advantaged plasticizer generated by reductive coupling of lignin-derived aromatics
US-2024124381-A1 · Apr 18, 2024 · US
Amphoteric compounds
US-2022356151-A1 · Nov 10, 2022 · US
Process of preparing 1,1'-disulfandiylbis(4-fluoro-2-methyl-5-nitrobenzol)
US-2022348538-A1 · Nov 3, 2022 · US
Amphoteric compounds
US-11414380-B2 · Aug 16, 2022 · US
Stable positive side material for all-organic flow battery
US-11245111-B2 · Feb 8, 2022 · US
EMM-28, a novel synthetic crystalline material, its preparation and use
US-10597300-B2 · Mar 24, 2020 · US
Process for the preparation of a sulfated derivative of 3,5-diiodo-o-[3-iodophenyl]-l-tyrosine
US-10457635-B2 · Oct 29, 2019 · US
1-sulfonamido-4-aryloxy compounds, and preparation method and medicinal application thereof
US-10442759-B2 · Oct 15, 2019 · US
Emm-28, a novel synthetic crystalline material, its preparation and use
US-2019218106-A1 · Jul 18, 2019 · US
Stable positive side material for all-organic flow battery
US-2019115594-A1 · Apr 18, 2019 · US
EMM-28, a novel synthetic crystalline material, its preparation and use
US-10252918-B2 · Apr 9, 2019 · US
1-sulfonamido-4-aryloxy compounds, and preparation method and medicinal application thereof
US-2018251423-A1 · Sep 6, 2018 · US
Method for coupling an aromatic or vinylic compound to a boron-containing compound
US-2018237459-A1 · Aug 23, 2018 · US
Process For The Preparation Of A Sulfated Derivative Of 3,5-Diiodo-O-[3-Iodophenyl]-L-Tyrosine
US-2018118669-A1 · May 3, 2018 · US
Process for the preparation of a sulfated derivative of 3,5-diiodo-O-[3-iodophenyl]-L-tyrosine
US-9890116-B2 · Feb 13, 2018 · US
Emm-28, a novel synthetic crystalline material, its preparation and use
US-2017158521-A1 · Jun 8, 2017 · US
Amphoteric compounds
US-2017081277-A1 · Mar 23, 2017 · US