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Inventor

David W. Ziettlow

Inventor
Midland, MI, US

Overview

2→
Patents
1988–2015
Patent span
Chemistry
Primary field (CPC C)

Patents· 2 as inventor

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

C07Dprimary
C07DHeterocyclic compounds33%
C08BPolysaccharides33%
C08LCompositions of macromolecular compounds33%
PatentTitleYear
9,156,919'Method of removing alkylene halogenohydrin from cellulose ether'20154,742,175'Preparation of polymorphically pure terfenadine'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988Patents assigned to MERRELL DOW PHARMA (1)· patent assignee history
1988–2015Based in Midland, MI, US· patent location history
2015Patents assigned to ARTHUR ANDREW C (1)· patent assignee history
2015Patents assigned to DOW GLOBAL TECHNOLOGIES LLC (1)· patent assignee history
2015Patents assigned to ENGELMAN RICHARD A (1)· patent assignee history
2015Patents assigned to MALLON CHARLES B (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ARTHUR ANDREW C12015
DOW GLOBAL TECHNOLOGIES LLC12015
ENGELMAN RICHARD A12015
MALLON CHARLES B12015
MERRELL DOW PHARMA11988
Locations
LocationPatentsSpan
Midland, MI, US21988–2015