John Leonard Ohlson

Person

Bedford, MA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Polyurethane polymer amine salt as a dyeing aid, particularly for p...
- Patent number 4,421,826
- Issue date Dec 20, 1983
- W. R. Grace & Co.
- John L. Ohlson
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Process for preparing chelating agents
- Patent number 4,338,460
- Issue date Jul 6, 1982
- W. R. Grace & Co.
- Roger R. Gaudette
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
N,N'Di(hydroxybenzyl) 1,3-propanediamine N,N'-diacetonitriles
- Patent number 4,225,502
- Issue date Sep 30, 1980
- W. R. Grace & Co.
- Roger R. Gaudette
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Metal chelates
- Patent number 4,152,345
- Issue date May 1, 1979
- W. R. Grace & Co.
- Roger R. Gaudette
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
N,N-di-(hydroxybenzyl)-trimethylene diaminediacetic acids
- Patent number 4,069,249
- Issue date Jan 17, 1978
- W. R. Grace & Co.
- Roger Robert Gaudette
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Hexahydropyrimidine-1,3-diacetonitriles and processes for preparing...
- Patent number 4,059,548
- Issue date Nov 22, 1977
- W. R. Grace & Co.
- Roger Robert Gaudette
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
5-Hydroxyhexahydropyrimidine
- Patent number 4,058,528
- Issue date Nov 15, 1977
- W. R. Grace & Co.
- Roger Robert Gaudette
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of N,N'-Dicarboxymethyl-1,3-propanediamines
- Patent number 4,058,527
- Issue date Nov 15, 1977
- W. R. Grace & Co.
- Roger Robert Gaudette
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of N,N'-dicarboxymethyl-1,3-propanediamines
- Patent number 3,988,367
- Issue date Oct 26, 1976
- W. R. Grace & Co.
- Roger Robert Gaudette
- C07 - ORGANIC CHEMISTRY

John Leonard Ohlson

Person

Patents Grantslast 30 patents

Polyurethane polymer amine salt as a dyeing aid, particularly for p...

Process for preparing chelating agents

N,N'Di(hydroxybenzyl) 1,3-propanediamine N,N'-diacetonitriles

Metal chelates

N,N-di-(hydroxybenzyl)-trimethylene diaminediacetic acids

Hexahydropyrimidine-1,3-diacetonitriles and processes for preparing...

5-Hydroxyhexahydropyrimidine

Preparation of N,N'-Dicarboxymethyl-1,3-propanediamines

Preparation of N,N'-dicarboxymethyl-1,3-propanediamines