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Official data from INPI

CIRCUITO DE SUPERVISÃO.

Em AnáliseInvention Patent

Application data

Number

PI8601997

Type

Invention Patent

Filing

04/18/1986

Publication

01/06/1987

Progress at the INPI

  1. Filing04/18/86
  2. Publication01/06/87
  3. Examination03/21/89
  4. Allowance11/03/92
  5. Grant07/27/93
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 03/21/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W. C. (pessoa física)

US

See this company's full portfolio

Inventors

J. E. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

725,050 · 04/19/1986

US

725.050 · 04/19/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

03/21/1989

RPI 961

Publicação do pedido de patente

#3.1

01/06/1987

RPI 846

Pedido de patente depositado

#2.1

11/04/1986

RPI 837

Carta-patente expirada

#21.1

Patente extinta em 18/04/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

07/27/1993

RPI 1182

Notificação para pagamento de retribuição

#13.1

03/23/1993

RPI 1164

Republicação - classificação IPC

#15.11

12/08/1992

RPI 1149

Deferimento

#9.1

11/03/1992

RPI 1144

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