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Inventor

Johann Niggemann

Inventor
Leverkusen, DE

Overview

3→
Patents
1982–1995
Patent span
Performing operations
Primary field (CPC B)

Patents· 3 as inventor

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

B29Bprimary
B29BPreparation or pretreatment of the material to be shaped33%
B22CFoundry moulding17%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds17%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%
Y10TTechnical subjects covered by former us classification17%
PatentTitleYear
5,468,832'Heat-curable reaction resin mixtures and the use thereof'19954,378,335'Device for producing a solid-forming or foaming flowable reaction mixture'19834,314,963'Method and a device for producing shaped articles from a multi-component reaction mixture'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982–1995Patents assigned to BAYER AG (3)· patent assignee history
1982–1995Based in Leverkusen, DE· patent location history
1983Patents assigned to HENNECKE GMBH MASCHF (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BAYER AG31982–1995
HENNECKE GMBH MASCHF11983
Locations
LocationPatentsSpan
Leverkusen, DE31982–1995