Inventor

Gerhard Pelzl

Inventor

Halle-Neustadt, DD

Overview

8→

Patents

1982–1990

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 elsewhere50%

C07DHeterocyclic compounds25%

C07CAcyclic or carbocyclic compounds13%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium6%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein6%

PatentTitleYear

4,952,699'Liquid-crystalline, 2,5-disubstituted, 1,3,4-thiadiazoles with extended smectic C phases'1990 4,874,544'Ferroelectric liquid crystals'1989 4,615,824'Mixing component for liquid crystal substances'1986 4,601,846'Liquid crystal substances for the guest-host effect'1986 4,438,268'Liquid crystal substances'1984 4,358,589'Nematic liquid crystal compounds'1982 4,356,103'Liquid crystals for electro-optical devices'1982 4,348,298'Nematic liquid crystal mixtures'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982–1990Patents assigned to WERK FERNSEHELEKTRONIK VEB (7)· patent assignee history

1982–1984Based in Halle, DE· patent location history

1984Patents assigned to DEMUS DIETRICH (1)· patent assignee history

1984Patents assigned to DEUTSCHER HANS JOACHIM (1)· patent assignee history

1984Patents assigned to PELZL GERHARD (1)· patent assignee history

1984Patents assigned to SCHAEFER WOLFGANG (1)· patent assignee history

1986–1990Based in Halle-Neustadt, DD· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
WERK FERNSEHELEKTRONIK VEB	7	1982–1990
DEMUS DIETRICH	1	1984
DEUTSCHER HANS JOACHIM	1	1984
PELZL GERHARDself	1	1984
SCHAEFER WOLFGANG	1	1984

Locations

Location	Patents	Span
Halle-Neustadt, DD	4	1986–1990
Halle, DE	4	1982–1984