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Official data from INPI

PROCESSO DE FABRICAÇÃO DE UM TROCADOR DE CALOR E PERFIL OCO EXTRUDADO METÁLICO PARA O MESMO

Prazo de SigiloInvention Patent

Application data

Number

PI8804617

Type

Invention Patent

Filing

09/08/1988

Publication

05/01/1990

Progress at the INPI

  1. Filing09/08/88
  2. Publication05/01/90
  3. Examination06/23/92
  4. Allowance08/24/93
  5. Grant04/26/94
  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: 02/08/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

N. A. (pessoa física)

NO

N. A. (pessoa física)

NO

See this company's full portfolio

Inventors

R. J. (pessoa física)

US

Technical data

IPC Classification

Priority claims

DE

P3730117.9 · 09/08/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

02/08/1989

RPI 955

Carta-patente expirada

#21.1

Patente extinta em 08/09/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

04/26/1994

RPI 1221

Deferimento

#9.1

08/24/1993

RPI 1186

Solicitação de exame técnico

#4.1

06/23/1992

RPI 1125

Publicação do pedido de patente

#3.1

05/01/1990

RPI 1016

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