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Official data from INPI

CONEXÃO DE FECHAMENTO PARA TROCADOR DE CALOR

PublicadaInvention Patent

Application data

Number

PI8701689

Type

Invention Patent

Filing

04/10/1987

Publication

10/25/1988

Progress at the INPI

  1. Filing04/10/87
  2. Publication10/25/88
  3. Examination11/13/90
  4. Allowance11/12/91
  5. Grant09/29/92
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 10/25/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

B. C. (pessoa física)

US

Inventors

M. M. (pessoa física)

US

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

10/25/1988

RPI 940

Pedido de patente depositado

#2.1

07/28/1987

RPI 875

Carta-patente expirada

#21.1

Patente extinta em 10/04/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

09/29/1992

RPI 1139

Notificação para pagamento de retribuição

#13.1

03/31/1992

RPI 1113

Deferimento

#9.1

11/12/1991

RPI 1093

Exigência - art. 36 da LPI

#6.1

05/28/1991

RPI 1069

Solicitação de exame técnico

#4.1

11/13/1990

RPI 1041

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