Inventor

Barry A. Cullen

Inventor

Lyndeborough, NH, US

Overview

13→

Patents

1976–2002

Patent span

Chemistry

Primary field (CPC C)

Patents· 13 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C07Cprimary

C07CAcyclic or carbocyclic compounds42%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium13%

C05DInorganic fertilisers not covered by subclasses c05b, c05c8%

C05GMixtures of fertilisers covered individually by different subclasses of class c058%

C07DHeterocyclic compounds8%

C11DDetergent compositions8%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%

A01NPreservation of bodies of humans or animals or plants or parts thereof4%

PatentTitleYear

6,365,772'Facile synthesis of phosphonomethylglycine from phosphonomethyliminodiacetic acid'2002 6,118,022'Synthesis of phosphonomethyliminodiacetic acid with reduced effluent'2000 5,993,504'Plant micronutrient chelating surfactant compounds'1999 5,962,717'Plant micronutrient chelating surfactant compounds'1999 5,843,866'Pesticidal compositions comprising solutions of polyurea and/or polyurethane'1998 5,449,822'Preparation of ethylenediaminetriacetic acid'1995 5,312,972'Conversion of hydroxymethyl-iminodiacetic acid to phosphonomethyl-iminodiacetic acid'1994 5,284,972'N-acyl-N,N\',N\'-ethylenediaminetriacetic acid derivatives and process of preparing same'1994 5,250,728'Preparation of ethylenediaminetriacetic acid'1993 5,187,301'Preparation of iminodiacetonitrile from glycolonitrile'1993 H0000004'Processs for the preparation of iminodiacetonitrile'1985 4,156,096'Process for recovering dissolved iminodiacetonitrile from effluent liquors'1979 3,993,681'Process for preparing iminodiacetonitrile'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1993Patents assigned to GRACE W R & CO (3)· patent assignee history

1976–1979Based in Nashua, NH, US· patent location history

1985Based in Amherst, NH, US· patent location history

1993–2002Patents assigned to HAMPSHIRE CHEMICAL CORP (9)· patent assignee history

1993–2000Based in Lyndeborough, NH, US· patent location history

1993–2002Based in Lyndeboro, NH, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HAMPSHIRE CHEMICAL CORP	9	1993–2002
GRACE W R & CO	3	1976–1993

Locations

Location	Patents	Span
Lyndeborough, NH, US	8	1993–2000
Lyndeboro, NH, US	2	1993–2002
Nashua, NH, US	2	1976–1979
Amherst, NH, US	1	1985