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Official data from INPI

SOLUÇÃO AQUOSA PARA O TRATAMENTO DE METAL E PROCESSO PARA TRATAMENTO DE UMA SUPERFÍCIE DE METAL

Em ExigênciaInvention Patent

Application data

Number

PI8402194

Type

Invention Patent

Filing

05/09/1984

Publication

12/18/1984

Progress at the INPI

  1. Filing05/09/84
  2. Publication12/18/84
  3. Examination01/27/87
  4. Allowance10/19/93
  5. Grant05/31/94
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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: 06/14/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Parker Chemical Company

US

See this company's full portfolio

Inventors

A. L. (pessoa física)

US

J. K. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

490.580 · 05/09/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

06/14/1988

RPI 921

Solicitação de exame técnico

#4.1

01/27/1987

RPI 849

Publicação do pedido de patente

#3.1

12/18/1984

RPI 739

Pedido de patente depositado

#2.1

07/24/1984

RPI 718

Carta-patente expirada

#21.1

Patente extinta em 09/05/99

07/08/2008

RPI 1957

14.1

07/05/1994

RPI 1231

Concessão da patente

#16.1

05/31/1994

RPI 1226

Deferimento

#9.1

10/19/1993

RPI 1194

Exigência - art. 36 da LPI

#6.1

02/24/1993

RPI 1160

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