Inventor

Donald R. Ulrich

Inventor
Alexandria, VA, US

Overview

8→
Patents
1989–1990
Patent span
Chemistry
Primary field (CPC C)

Patents· 8 as inventor

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

C09Kprimary
C09KMaterials for miscellaneous applications, not provided for elsewhere44%
C03CChemical composition of glasses, glazes or vitreous enamels19%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein19%
Y10TTechnical subjects covered by former us classification13%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–1990Patents assigned to HOECHST CELANESE CORP (8)· patent assignee history
1989–1990Based in Alexandria, VA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HOECHST CELANESE CORP81989–1990
Locations
LocationPatentsSpan
Alexandria, Virginia, US81989–1990