Inventor

Johan Rietberg

Inventor

Zwolle, NL

Overview

6→

Patents

1978–2002

Patent span

Chemistry

Primary field (CPC C)

Patents· 6 as inventor

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

Y10Tprimary

Y10TTechnical subjects covered by former us classification33%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds27%

C09DCoating compositions, e.g. paints, varnishes or lacquers20%

C08LCompositions of macromolecular compounds7%

D06NWall, floor, or like covering materials, e.g. linoleum, oilcloth, artificial leather, roofing felt, consisting of a fibrous web coated with a layer of macromolecular material7%

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

PatentTitleYear

6,392,006'Condensation polymer containing hydroxyalkylamide groups'2002 6,387,496'Condensation polymer containing hydroxyalkylamide groups'2002 5,011,740'Coating materials curing at room temperature'1991 4,970,096'Coating materials curing at room temperature'1990 4,686,270'Process for preparing and processing a resin composition'1987 4,072,662'Polyesters'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978Patents assigned to OCTROPA BV (1)· patent assignee history

1978–2002Based in Zwolle, NL· patent location history

1987Patents assigned to DSM RESINS BV (1)· patent assignee history

1990–1991Patents assigned to STAMICARBON (2)· patent assignee history

2002Patents assigned to DSM NV (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
DSM NV	2	2002
STAMICARBON	2	1990–1991
DSM RESINS BV	1	1987
OCTROPA BV	1	1978

Locations

Location	Patents	Span
Zwolle, NL	6	1978–2002