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Official data from INPI

APARELHO DE VEDAÇÃO, VÁLVULA DE PLACA ELEMENTO DE MOLA, PROCESSO PARA FORMAÇÃO DE VÁLVULA DE PLACA E PROCESSO PARA FORMAÇÃO DE PLACA DE VEDAÇÃO DE PLÁSTICO

PublicadaInvention Patent

Application data

Number

PI8803941

Type

Invention Patent

Filing

08/09/1988

Publication

02/28/1989

Progress at the INPI

  1. Filing08/09/88
  2. Publication02/28/89
  3. Examination07/09/91
  4. Allowance
  5. Grant
  6. In force

Published on 02/28/1989, the application is awaiting technical examination at the INPI, which decides whether the invention meets the patentability requirements.

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Latest action published by the INPI: 02/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Dresser Industries Inc

US

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Inventors

D. W. (pessoa física)

G. S. (pessoa física)

Technical data

IPC Classification

Priority claims

US

086526 · 08/17/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

02/28/1989

RPI 958

Pedido de patente depositado

#2.1

01/10/1989

RPI 951

Retificação

#15.3

10/31/1995

RPI 1300

Solicitação de exame técnico

#4.1

07/09/1991

RPI 1075

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