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Official data from INPI

ESTRUTURA DE VÁLVULA PARA FLUÍDOS

Em AnáliseInvention Patent

Application data

Number

PI8700181

Type

Invention Patent

Filing

01/16/1987

Publication

12/08/1987

Progress at the INPI

  1. Filing01/16/87
  2. Publication12/08/87
  3. Examination04/05/88
  4. Allowance09/11/90
  5. Grant04/30/91
  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: 04/05/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Commercial Shearing, Inc.

US

Inventors

A. W. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

820.262 · 01/17/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

04/05/1988

RPI 911

Publicação do pedido de patente

#3.1

12/08/1987

RPI 894

Pedido de patente depositado

#2.1

05/19/1987

RPI 865

Carta-patente expirada

#21.1

Patente extinta em 16/01/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

04/30/1991

RPI 1065

Notificação para pagamento de retribuição

#13.1

12/26/1990

RPI 1047

Deferimento

#9.1

09/11/1990

RPI 1032

Exigência - art. 36 da LPI

#6.1

03/13/1990

RPI 1009

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