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Class Information
Number: 562/572
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Carboxylic acids and salts thereof > Acyclic > Nitrogen bonded to carbon of organic radical (e.g., amino acids, etc.) > Polycarboxylic > Nitrilotriacetic acid per se or salt thereof
Description:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6555706 |
Process for making iminodiacetic acid compounds from monoethanolamine substrates |
Apr. 29, 2003 |
| 6239312 |
Method for the preparation of salts of carboxylic acids using copper catalyzed dehydrogenation |
May. 29, 2001 |
| 6159894 |
Catalyst for dehydrogenation of amino alcohols to amino carboxylic acids or of ethylene glycol (derivatives) to oxycarboxylic acids, method for their production and their use |
Dec. 12, 2000 |
| 6060265 |
Methods for the detoxification of nitrile and/or amide compounds |
May. 9, 2000 |
| 6028230 |
Epoxide polymerization process |
Feb. 22, 2000 |
| 6005141 |
Use of glycine-N,N-diacetic acid derivatives as biodegradable complexing agents for alkaline earth metal ions and heavy metal ions and process for the preparation thereof |
Dec. 21, 1999 |
| 5998663 |
Granular alkali metal nitrilotriacetate |
Dec. 7, 1999 |
| 5919988 |
Foam test for double metal cyanide-catalyzed polyols |
Jul. 6, 1999 |
| 5861531 |
Process for producing granular alkali metal nitrilotriacetate |
Jan. 19, 1999 |
| 5849950 |
Preparation of glycine-N,N-diacetic acid derivatives |
Dec. 15, 1998 |
| 5777177 |
Preparation of double metal cyanide-catalyzed polyols by continuous addition of starter |
Jul. 7, 1998 |
| 5744639 |
Granular alkali metal nitrilotriacetate |
Apr. 28, 1998 |
| 5367112 |
Process to prepare amino carboxylic acid salts |
Nov. 22, 1994 |
| 5292936 |
Process to prepare amino carboxylic acid salts |
Mar. 8, 1994 |
| 4782183 |
Method for manufacture of amino-carboxylic acid salts |
Nov. 1, 1988 |
| 4547589 |
Hydrolysis of nitrilotriacetonitrile |
Oct. 15, 1985 |
| 4443418 |
Method of removing hydrogen sulfide and carbon dioxide from gases |
Apr. 17, 1984 |
| RE31463 |
Radiopharmaceutical chelates and method of external imaging |
Dec. 13, 1983 |
| 4322361 |
Method of preparing a manganese chelate having improved properties |
Mar. 30, 1982 |
| 4212994 |
Process for the preparation of carboxylic acid |
Jul. 15, 1980 |
| 4181672 |
Process for preparing metal chelates |
Jan. 1, 1980 |
| 4088682 |
Oxalate hydrogenation process |
May. 9, 1978 |
| 3998967 |
Method of inhibiting the growth of bacteria and fungi with higher aliphatic amine salts of nitrilotriacetic acid |
Dec. 21, 1976 |
| 3966803 |
Process for the manufacture of alkali metal salts of amino polycarboxylic acids |
Jun. 29, 1976 |
| 3959342 |
Process for the preparation of nitrilotriacetonitrile (NTN) |
May. 25, 1976 |
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