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Official data from INPI

VESTUÁRIO DE PROTEÇÃO

Prazo de SigiloInvention Patent

Application data

Number

PI8902670

Type

Invention Patent

Filing

06/07/1989

Publication

09/04/1990

Progress at the INPI

  1. Filing06/07/89
  2. Publication09/04/90
  3. Examination10/15/91
  4. Allowance
  5. Grant
  6. In force

Published on 09/04/1990, 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: 07/18/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Coal Industry (Patents) Limited

GB

See this company's full portfolio

Inventors

R. H. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

UK

8813686.6 · 06/09/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

07/18/1989

RPI 978

Retificação

#15.3

07/26/1994

RPI 1234

Solicitação de exame técnico

#4.1

10/15/1991

RPI 1089

Publicação do pedido de patente

#3.1

09/04/1990

RPI 1031

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