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Official data from INPI

PROCESSO E APARELHO DE PERFILAGEM PARA DETERMINAÇÃO DE CONCENTRAÇÕES ELEMENTARES ABSOLUTAS DE FORMAÇÕES DA SUBSUPERFÍCIE.

PublicadaInvention Patent

Application data

Number

PI8704650

Type

Invention Patent

Filing

09/04/1987

Publication

04/26/1988

Progress at the INPI

  1. Filing09/04/87
  2. Publication04/26/88
  3. Examination09/25/90
  4. Allowance01/19/93
  5. Grant06/29/93
  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: 04/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Prad Research and Development N.V.

NL

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Inventors

J. G. (pessoa física)

US

J. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

905.371 · 09/05/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

04/26/1988

RPI 914

Pedido de patente depositado

#2.1

11/24/1987

RPI 892

Carta-patente expirada

#21.1

Patente extinta em 04/09/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

06/29/1993

RPI 1178

Notificação para pagamento de retribuição

#13.1

05/04/1993

RPI 1170

Deferimento

#9.1

01/19/1993

RPI 1155

Exigência - art. 36 da LPI

#6.1

04/21/1992

RPI 1116

Solicitação de exame técnico

#4.1

09/25/1990

RPI 1034

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