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Official data from INPI

PROCESSO PARA PRODUZIR UMA GEOGRADE , GEOGRADE, E, PROCESSO DE REFORÇAR A RESISTÊNCIA DO SOLO

Arquivada/ExtintaInvention Patent
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Application data

Number

PI9004591

Type

Invention Patent

Filing

09/13/1990

Publication

09/10/1991
View on INPI

Progress at the INPI

  1. Filing09/13/90
  2. Publication09/10/91
  3. Examination12/21/93
  4. Allowance05/25/99
  5. Grant11/16/99
  6. Expired01/29/13

The letters patent expired on 01/29/2013: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 01/29/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

P.L.G. Research Limited

GB

Inventors

F. M. (pessoa física)

GB

K. M. (pessoa física)

GB

T. G. (pessoa física)

GB

Technical data

IPC Classification

B29C 55/04C09K 17/00E02D 3/00

Priority claims

GB

8920843.3 · 09/14/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 13/09/2010

01/29/2013

RPI 2195

Concessão da patente

#16.1

11/16/1999

RPI 1506

Deferimento

#9.1

05/25/1999

RPI 1481

Exigência - art. 36 da LPI

#6.1

08/18/1998

RPI 1443

Alteração de sede deferida

#25.7

01/13/1998

RPI 1412

Solicitação de exame técnico

#4.1

12/21/1993

RPI 1203

Publicação do pedido de patente

#3.1

09/10/1991

RPI 1084

Pedido de patente depositado

#2.1

03/19/1991

RPI 1059

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