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Official data from INPI

ARQUIVO DE DISCOS.

Em AnáliseInvention Patent

Application data

Number

PI8605304

Type

Invention Patent

Filing

10/29/1986

Publication

07/28/1987

Progress at the INPI

  1. Filing10/29/86
  2. Publication07/28/87
  3. Examination08/22/89
  4. Allowance04/13/93
  5. Grant08/31/93
  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: 08/22/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

I. C. (pessoa física)

US

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Inventors

C. H. (pessoa física)

GB

F. C. (pessoa física)

GB

J. H. (pessoa física)

GB

M. H. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

85307881.4 · 10/30/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

08/22/1989

RPI 983

Publicação do pedido de patente

#3.1

07/28/1987

RPI 875

Pedido de patente depositado

#2.1

03/31/1987

RPI 858

Carta-patente expirada

#21.1

Patente extinta em 29/10/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

08/31/1993

RPI 1187

Deferimento

#9.1

04/13/1993

RPI 1167

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