Official data from INPI

PROCESSO PARA PRODUÇÃO DE CELULOSE MODIFICADA

Prazo de SigiloInvention Patent

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Application data

Number

PI8803499

Type

Invention Patent

Filing

07/12/1988

Publication

03/01/1990

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Progress at the INPI

Filing07/12/88
Publication03/01/90
Examination06/02/92
Allowance09/05/95
Grant04/30/96
Expired09/02/08

The letters patent expired on 09/02/2008: 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: 12/13/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Board of Regents, The University of Texas System

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Inventors

R. J. (pessoa física)

Technical data

IPC Classification

C12P 19/04

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

12/13/1988

RPI 947

Carta-patente expirada

#21.1

Patente extinta em 12/07/2003

09/02/2008

RPI 1965

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

01/31/1995

RPI 1261

Solicitação de exame técnico

#4.1

06/02/1992

RPI 1122

Publicação do pedido de patente

#3.1

03/01/1990

RPI 1007

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