Inventor

Donald J. David

Inventor

Amherst, MA, US

Overview

20→

Patents

1976–1997

Patent span

Chemistry

Primary field (CPC C)

Patents· 20 as inventor

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

B32Bprimary

B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form15%

C08JWorking-up15%

Y10TTechnical subjects covered by former us classification15%

G01NInvestigating or analysing materials by determining their chemical or physical properties10%

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds8%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%

B29BPreparation or pretreatment of the material to be shaped5%

B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts5%

B29LIndexing scheme associated with subclass b29c, relating to particular articles5%

Y02WClimate change mitigation technologies related to wastewater treatment or waste management5%

PatentTitleYear

5,594,069'Process for producing mixed poly(vinyl acetal)s'1997 5,591,802'Thermoplastic composition and method for producing thermoplastic composition by melt blending carpet'1997 5,498,667'Thermoplastic composition and method for producing thermoplastic composition by melt blending carpet'1996 5,294,384'Thermoplastic composition and method for producing thermoplastic composition by melt blending carpet'1994 5,212,014'Polycarbonate sheet laminated to plasticized polyvinyl butyral sheet'1993 5,137,954'Polyvinyl butyral sheet'1992 5,030,688'Ionomeric polyvinyl butyral'1991 5,028,658'Sheet of polyvinyl butyral and polyurethane'1991 4,999,253'Polyvinyl butyral sheet'1991 4,999,078'Reducing blocking and increasing flow of plasticized polyvinyl butyral sheet'1991 4,968,745'Method of producing ionomeric polyvinyl butyral'1990 4,968,743'Process for preparing polyinyl butyral sheet'1990 4,968,744'Polyvinyl butyral polyblend'1990 4,704,163'Printing ink'1987 4,106,909'Chemical analysis with coated, light waveguide under humidity control'1978 4,050,895'Optical analytical device, waveguide and method'1977 4,048,041'Electronic system for providing specificity in an electrochemical analytical device'1977 4,040,691'Waveguide holder-humidifier'1977 4,040,749'Organic vapor detection with liquid crystals'1977 3,999,857'Refractive index detector'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1978Patents assigned to MONSANTO RES CORP (5)· patent assignee history

1976–1978Based in Centerville, OH, US· patent location history

1977Patents assigned to US ARMY (1)· patent assignee history

1987Patents assigned to MINNESOTA MINING & MFG (1)· patent assignee history

1987Based in St. Paul, MN, US· patent location history

1990–1997Patents assigned to MONSANTO CO (12)· patent assignee history

1990–1997Based in Amherst, MA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MONSANTO CO	12	1990–1997
MONSANTO RES CORP	5	1976–1978
MINNESOTA MINING & MFG	1	1987
US ARMY	1	1977

Locations

Location	Patents	Span
Amherst, Massachusetts, US	13	1990–1997
Centerville, OH, US	6	1976–1978
St. Paul, Minnesota, US	1	1987