Official data from INPI

COMPOSICOES LIQUIDAS DE N-N'-BIS(1-FORMAMIDO-2,2,2-TRICLORO-ETIL)PIPE RAZINA

Em AnáliseInvention Patent

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Application data

Number

PI7603059

Type

Invention Patent

Filing

05/14/1975

Publication

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Progress at the INPI

Filing05/14/75
Publication
Examination
Allowance
Grant06/29/82
Expired08/03/93

The letters patent expired on 08/03/1993: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 08/08/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

CELAMERCK GMBH & CO KG

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Inventors

O. W. (pessoa física)

T. K. (pessoa física)

Technical data

IPC Classification

C07D 241/04

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

08/08/1989

RPI 981

20.4

08/01/1989

RPI 980

Concessão da patente

#16.1

06/29/1982

RPI 610

Carta-patente expirada

#21.1

08/03/1993

RPI 1183

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