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Official data from INPI

VÁLVULA

Em AnáliseInvention Patent
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Application data

Number

PI8701366

Type

Invention Patent

Filing

03/05/1987

Publication

12/22/1987
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Progress at the INPI

  1. Filing03/05/87
  2. Publication12/22/87
  3. Examination07/19/88
  4. Allowance10/29/91
  5. Grant09/29/92
  6. Terminated12/31/96

The patent was granted on 09/29/1992 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 07/19/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

G. S. (pessoa física)

DE

Inventors

G. S. (pessoa física)

DE

Technical data

IPC Classification

F01L 3/20F02B 19/02F02D 13/02

Priority claims

DE

P 3607789.4-13 · 03/08/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

07/19/1988

RPI 926

Publicação do pedido de patente

#3.1

12/22/1987

RPI 896

Pedido de patente depositado

#2.1

07/07/1987

RPI 872

Anuidade - prazo legal encerrado

#18.2

12/31/1996

RPI 1361

Concessão da patente

#16.1

09/29/1992

RPI 1139

Notificação para pagamento de retribuição

#13.1

03/10/1992

RPI 1110

Deferimento

#9.1

10/29/1991

RPI 1091

Exigência - art. 36 da LPI

#6.1

06/18/1991

RPI 1072

Exigência - art. 36 da LPI

#6.1

12/18/1990

RPI 1046

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