DE69117507T2 - Lichtpolarisierendes Material auf Basis von Äthylendiaminpolyessigsäurederivaten - Google Patents

Lichtpolarisierendes Material auf Basis von Äthylendiaminpolyessigsäurederivaten

Info

Publication number
DE69117507T2
DE69117507T2 DE1991617507 DE69117507T DE69117507T2 DE 69117507 T2 DE69117507 T2 DE 69117507T2 DE 1991617507 DE1991617507 DE 1991617507 DE 69117507 T DE69117507 T DE 69117507T DE 69117507 T2 DE69117507 T2 DE 69117507T2
Authority
DE
Germany
Prior art keywords
acid derivatives
ethylene diamine
material based
light polarizing
polarizing material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE1991617507
Other languages
English (en)
Other versions
DE69117507D1 (de
Inventor
Joseph A Check Iii
Robert L Saxe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Research Frontiers Inc
Original Assignee
Research Frontiers Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Research Frontiers Inc filed Critical Research Frontiers Inc
Priority claimed from EP91402451A external-priority patent/EP0532809B1/de
Publication of DE69117507D1 publication Critical patent/DE69117507D1/de
Application granted granted Critical
Publication of DE69117507T2 publication Critical patent/DE69117507T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

DE1991617507 1991-09-16 1991-09-16 Lichtpolarisierendes Material auf Basis von Äthylendiaminpolyessigsäurederivaten Expired - Fee Related DE69117507T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91402451A EP0532809B1 (de) 1990-07-30 1991-09-16 Lichtpolarisierendes Material auf Basis von Äthylendiaminpolyessigsäurederivaten

Publications (2)

Publication Number Publication Date
DE69117507D1 DE69117507D1 (de) 1996-04-04
DE69117507T2 true DE69117507T2 (de) 1996-09-26

Family

ID=8208613

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1991617507 Expired - Fee Related DE69117507T2 (de) 1991-09-16 1991-09-16 Lichtpolarisierendes Material auf Basis von Äthylendiaminpolyessigsäurederivaten

Country Status (1)

Country Link
DE (1) DE69117507T2 (de)

Also Published As

Publication number Publication date
DE69117507D1 (de) 1996-04-04

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Representative=s name: JUNG, SCHIRDEWAHN, GRUENBERG, SCHNEIDER PATENTANWAELTE

8328 Change in the person/name/address of the agent

Representative=s name: ADVOTEC. PATENT- UND RECHTSANWAELTE, 80538 MUENCHE

8339 Ceased/non-payment of the annual fee