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Official data from INPI

PROCESSO DE CONVERSÃO DE MATERIAIS LIGNO-CELULÓSICOS EM PRODUTO COMPOSTO RECONSTITUÍDO

Em AnáliseInvention Patent
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Application data

Number

PI8505131

Type

Invention Patent

Filing

10/16/1985

Publication

05/26/1987
View on INPI

Progress at the INPI

  1. Filing10/16/85
  2. Publication05/26/87
  3. Examination08/11/87
  4. Allowance09/05/95
  5. Grant04/30/96
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 08/11/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

K. S. (pessoa física)

CA

Kuo-Cheng Shen, canadense

CA

Inventors

K. S. (pessoa física)

CA

Technical data

IPC Classification

B21B 1/04

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

08/11/1987

RPI 877

Publicação do pedido de patente

#3.1

05/26/1987

RPI 866

Pedido de patente depositado

#2.1

12/17/1985

RPI 791

Carta-patente expirada

#21.1

Patente extinta em 16/10/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

04/30/1996

RPI 1326

Deferimento

#9.1

09/05/1995

RPI 1292

Exigência - art. 36 da LPI

#6.1

03/09/1993

RPI 1162

Exigência - art. 36 da LPI

#6.1

12/10/1991

RPI 1097

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