| Patent Number |
Title Of Patent |
Date Issued |
| 6821760 |
Methods for producing L-aspartic acid |
November 23, 2004 |
| This invention relates to a method for producing L-aspartic acid comprising treating an ammonium fumarate solution with aspartase to generate an ammonium L-aspartate solution; adding fumaric acid to the solution; and then crystallizing L-aspartic acid from the solution, wherein fumaric a |
| 6784280 |
Polysuccinimide(CO) polymer derivate and process for production thereof |
August 31, 2004 |
| A process for producing a polysuccinimide (co)polymer derivative which permits the reaction of a polysuccinimide (co)polymer with a Lewis base in a wide temperature range (90.degree. to 300.degree. C.) without using a pH-adjusting agent is provided. The process for producing a polysu |
| 6544464 |
Method for molding of polymer |
April 8, 2003 |
| A method capable of molding by a simple procedure such a polymer as a polysuccinimide based (co)polymer or a protein whose glass transition temperature is very close to the decomposition temperature is provided. The method for the molding of a polymer contemplated by this invention c |
| 6380350 |
Polyaspartic acid |
April 30, 2002 |
| A polyaspartic acid is obtained from an amino acid having aspartic acid as an essential component thereof without entailing formation of a bulk substance. A method for the production of polyaspartic acid is described which includes heating an amino acid having aspartic acid as an essenti |
| 6214589 |
Method for producing L-aspartic acid |
April 10, 2001 |
| This invention relates to a method for producing L-aspartic acid, comprising the steps of: immobilizing microbial cells containing aspartase to produce an immobilized aspartase; feeding an ammonium fumarate solution into a reactor filled with the immobilized aspartase; and recovering the |
| 6150142 |
Process for production of L-aspartic acid |
November 21, 2000 |
| A process for producing crystalline L-aspartic acid is disclosed essentially consisting of the steps of preparing a mix solution containing fumaric acid, ammonia and an alkaline metal hydroxide, reacting the mix solution with aspartase to give a reaction solution containing L-aspartate |
| 6133014 |
Maleate isomerase gene |
October 17, 2000 |
| The present invention provides a gene coding for maleate isomerase excellent in stability, a recombinant vector having the gene, and a transformant transformed with the recombinant vector. According to the present invention, maleate isomerase excellent in stability can be produced ef |
| 5962280 |
Microorganisms immobilized on a solid support with a quaternary polyallylamine polymer |
October 5, 1999 |
| Enzyme-containing cells are immobilized on a water-insoluble support with a polymer represented by the following general formula (I): ##STR1## wherein Y is a direct bond or a divalent group represented by the following formula (II) ##STR2## R.sub.1 and R.sub.2 are each indepe |
| 5541090 |
Process for production of L-aspartic acid |
July 30, 1996 |
| A process for production of L-aspartic acid comprising the steps of (1) contacting (A) an enzyme-containing material having maleate isomerase activity and aspartase activity, or (B) an enzyme-containing product having maleate isomerase activity and an enzyme-containing material having |
