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Official data from INPI

APERFEICOAMENTOS EM INJETOR PARA VALVULA DE DESCARGA

Em AnáliseInvention Patent

Application data

Number

PI7701900

Type

Invention Patent

Filing

03/24/1977

Publication

-

Progress at the INPI

  1. Filing03/24/77
  2. Publication
  3. Examination
  4. Allowance11/17/81
  5. Grant02/22/83
  6. 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.

Talk to a specialist

Latest action published by the INPI: 11/16/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

M. F. (pessoa física)

Inventors

M. F. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

201

11/16/1983

RPI 682

Pedido de licença voluntária

#17.1

07/12/1983

RPI 664

Concessão da patente

#16.1

02/22/1983

RPI 644

110

10/19/1982

RPI 626

Recurso

#12.1

03/02/1982

RPI 593

Deferimento

#9.1

11/17/1981

RPI 578

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

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