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Official data from INPI

UMA GAXETA COMPOSTA TERMICAMENTE CONDUTORA

Prazo de SigiloInvention Patent

Application data

Number

PI8803389

Type

Invention Patent

Filing

07/04/1988

Publication

02/13/1990

Progress at the INPI

  1. Filing07/04/88
  2. Publication02/13/90
  3. Examination02/25/92
  4. Allowance03/09/93
  5. Grant08/31/93
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 12/20/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

D. C. (pessoa física)

US

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Inventors

P. G. (pessoa física)

Technical data

IPC Classification

Priority claims

US

081,968 · 08/05/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

12/20/1988

RPI 948

Carta-patente expirada

#21.1

Patente extinta em 04/07/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

08/31/1993

RPI 1187

Notificação para pagamento de retribuição

#13.1

06/29/1993

RPI 1178

Deferimento

#9.1

03/09/1993

RPI 1162

Solicitação de exame técnico

#4.1

02/25/1992

RPI 1108

Publicação do pedido de patente

#3.1

02/13/1990

RPI 1006

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