Official data from INPI

CORPA-CIRCUITO DE EFEITO RETARDADOR

Em AnáliseInvention Patent

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Application data

Number

PI7700656

Type

Invention Patent

Filing

02/03/1976

Publication

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Progress at the INPI

Filing02/03/76
Publication
Examination
Allowance12/01/81
Grant08/31/82
Expired07/27/93

The letters patent expired on 07/27/1993: 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: 01/17/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SAN O IND CO

Inventors

M. M. (pessoa física)

Technical data

IPC Classification

H01H 43/00 H01H 85/165 H01H 85/18

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.7

01/17/1984

RPI 691

20.4

01/10/1984

RPI 690

Concessão da patente

#16.1

08/31/1982

RPI 619

100

12/01/1981

RPI 580

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

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