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Official data from INPI

Dispositivo regulador de vazão para irrigação por sulcos, a aprtir de janelados.

ConcedidaInvention Patent
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Application data

Number

PI8500043

Type

Invention Patent

Filing

01/07/1985

Publication

08/19/1986
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Progress at the INPI

  1. Filing01/07/85
  2. Publication08/19/86
  3. Examination10/21/86
  4. Allowance11/03/87
  5. Grant08/30/88
  6. Expired07/15/08

The letters patent expired on 07/15/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 08/30/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Tubos e Conexões Tigre Ltda.

SC, BR

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Inventors

P. D. (pessoa física)

Technical data

IPC Classification

C09B 1/503

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/30/1988

RPI 932

14.4

05/17/1988

RPI 917

Notificação para pagamento de retribuição

#13.1

03/01/1988

RPI 906

Deferimento

#9.1

11/03/1987

RPI 889

Solicitação de exame técnico

#4.1

10/21/1986

RPI 835

Publicação do pedido de patente

#3.1

08/19/1986

RPI 826

Pedido de patente depositado

#2.1

04/09/1985

RPI 755

Carta-patente expirada

#21.1

Patente extinta em 07/01/2000

07/15/2008

RPI 1958

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