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Official data from INPI

PROCESSO E APARELHO PARA MISTURAR MATERIAIS PARTICULADOS

Em ExigênciaInvention Patent

Application data

Number

PI8405958

Type

Invention Patent

Filing

11/22/1984

Publication

09/10/1985

Progress at the INPI

  1. Filing11/22/84
  2. Publication09/10/85
  3. Examination09/15/87
  4. Allowance03/13/90
  5. Grant10/30/90
  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: 08/22/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W & A Bates Limited

GB

See this company's full portfolio

Inventors

A. N. (pessoa física)

R. P. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

83 31422 · 11/24/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

08/22/1989

RPI 983

6.2

07/26/1988

RPI 927

Solicitação de exame técnico

#4.1

09/15/1987

RPI 882

Publicação do pedido de patente

#3.1

09/10/1985

RPI 777

Pedido de patente depositado

#2.1

02/12/1985

RPI 747

Carta-patente expirada

#21.1

Patente extinta em 22/11/99

07/08/2008

RPI 1957

Pedido de licença compulsória

#20.1

11/10/1992

RPI 1145

Concessão da patente

#16.1

10/30/1990

RPI 1039

Notificação para pagamento de retribuição

#13.1

07/24/1990

RPI 1025

Deferimento

#9.1

03/13/1990

RPI 1009

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