Method for the synthesis of tryptophan analogs in aqueous solvents at reduced temperatures
US-2019271016-A1 · Sep 5, 2019 · US
Tryptophan
Tryptophan · 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 | C12P13/227 |
| Official title | {Tryptophan} |
| Display label | Tryptophan |
| Total patents | 144 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 18 |
| 2016 | 13 |
| 2017 | 17 |
| 2018 | 11 |
| 2019 | 10 |
| 2020 | 14 |
| 2021 | 10 |
| 2022 | 17 |
| 2023 | 9 |
| 2024 | 12 |
| 2025 | 8 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods and enzyme catalysts for the synthesis of non-canonical amino acids
US-2018327793-A1 · Nov 15, 2018 · US
Microorganisms having enhanced L-amino acids productivity and process for producing L-amino acids using the same
US-10113191-B2 · Oct 30, 2018 · US
Microbial approach for the production of 5-hydroxytryptophan
US-2018282774-A1 · Oct 4, 2018 · US
Microorganism of the genus Escherichia producing L-tryptophan and method for producing L-tryptophan using the same
US-10081822-B2 · Sep 25, 2018 · US
L-threonine and L-tryptophan producing bacteria strain and method of making same
US-10041099-B2 · Aug 7, 2018 · US
Microbial approach for the production of 5-hydroxytryptophan
US-10023889-B2 · Jul 17, 2018 · US
A microorganism of the genus escherichia producing l-tryptophan and a method for producing l-tryptophan using the same
US-2018127792-A1 · May 10, 2018 · US
Mutants of hydantoinase
US-9957536-B2 · May 1, 2018 · US
A microorganism of the genus escherichia producing l-tryptophan and method for producing l-tryptophan using the same
US-2018087077-A1 · Mar 29, 2018 · US
Engineered synthase for production of tryptophan derivatives and intransigent substrates
US-2018057806-A1 · Mar 1, 2018 · US
Method for producing an L-amino acid using a bacterium of the family Enterobacteriaceae having attenuated expression of a phosphate transporter-encoding gene
US-9873898-B2 · Jan 23, 2018 · US
Pterin-dependent biocatalysts and uses thereof
US-2017362617-A1 · Dec 21, 2017 · US
Processing biomass
US-9745609-B2 · Aug 29, 2017 · US
Microbial approach for the production of 5-hydroxytryptophan
US-2017240939-A1 · Aug 24, 2017 · US
L-threonine and L-tryptophan producing bacteria strain and method of making same
US-2017198317-A1 · Jul 13, 2017 · US
Precursor-directed biosynthesis of 5-hydroxytryptophan
US-9663768-B2 · May 30, 2017 · US
Microorganism of the genus escherichia producing l-tryptophan and method for producing l-tryptophan using the same
US-2017137854-A1 · May 18, 2017 · US
Method of producing chemical by continuous fermentation and continuous fermentation apparatus
US-9644221-B2 · May 9, 2017 · US
Fermentative production of ethanol from glucose, galactose and arabinose employing a recombinant yeast strain
US-2017121738-A1 · May 4, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C12P13/227?
- CPC C12P13/227 is the Cooperative Patent Classification code for “Tryptophan.”
- How many patents are filed under CPC C12P13/227 (Tryptophan)?
- Our database includes 144 publications tagged with this CPC code.
- Is patent activity under CPC C12P13/227 growing?
- Publication counts under this code: 12 in 2024 vs 8 in 2025 (latest complete years).