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Official data from INPI

VÁLVULA DE COMPORTA

Em ExigênciaInvention Patent

Application data

Number

PI8601910

Type

Invention Patent

Filing

04/29/1986

Publication

12/30/1986

Progress at the INPI

  1. Filing04/29/86
  2. Publication12/30/86
  3. Examination02/14/89
  4. Allowance04/24/90
  5. Grant10/30/90
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 10/17/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Cameron Iron Works, Inc.

US

Inventors

P. B. (pessoa física)

US

R. S. (pessoa física)

US

T. J. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

729.622 · 05/02/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

10/17/1989

RPI 991

Solicitação de exame técnico

#4.1

02/14/1989

RPI 956

Publicação do pedido de patente

#3.1

12/30/1986

RPI 845

Pedido de patente depositado

#2.1

11/04/1986

RPI 837

Carta-patente expirada

#21.1

Patente extinta em 29/04/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

10/30/1990

RPI 1039

Notificação para pagamento de retribuição

#13.1

08/21/1990

RPI 1029

Deferimento

#9.1

04/24/1990

RPI 1015

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