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Official data from INPI

APERFEIÇOAMENTO EM VÁLVULA DE DUPLA RETENÇÃO

Em AnáliseInvention Patent

Application data

Number

PI8603601

Type

Invention Patent

Filing

07/30/1986

Publication

04/22/1987

Progress at the INPI

  1. Filing07/30/86
  2. Publication04/22/87
  3. Examination03/15/88
  4. Allowance09/25/90
  5. Grant04/30/91
  6. Terminated10/03/95

The patent was granted on 04/30/1991 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 03/15/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

M. Klein Engenharia Ltda

MG, BR

Inventors

L. H. (pessoa física)

BR

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

03/15/1988

RPI 908

Publicação antecipada

#3.2

04/22/1987

RPI 861

Pedido de patente depositado

#2.1

01/06/1987

RPI 846

Anuidade - prazo legal encerrado

#18.2

10/03/1995

RPI 1296

Republicação - classificação IPC

#15.11

05/07/1991

RPI 1066

Concessão da patente

#16.1

04/30/1991

RPI 1065

Notificação para pagamento de retribuição

#13.1

01/08/1991

RPI 1049

Deferimento

#9.1

09/25/1990

RPI 1034

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