Official data from INPI

PROCESSO PARA INIBICAO DE POLIMERIZACAO DE COMPOSTOS VINIL-AROMATICOS

ConcedidaInvention Patent

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Application data

Number

PI7800842

Type

Invention Patent

Filing

02/24/1977

Publication

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Progress at the INPI

Filing02/24/77
Publication
Examination
Allowance08/24/82
Grant07/30/85
Expired07/20/93

The letters patent expired on 07/20/1993: 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: 07/30/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

C. T. (pessoa física)

Inventors

W. J. (pessoa física)

Technical data

IPC Classification

C07C 7/04

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/30/1985

RPI 771

110

03/26/1985

RPI 753

Recurso

#12.1

01/11/1983

RPI 638

Deferimento

#9.1

08/24/1982

RPI 618

Exigência - art. 36 da LPI

#6.1

01/26/1982

RPI 588

Carta-patente expirada

#21.1

07/20/1993

RPI 1181

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