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Official data from INPI

PROCESSO PARA A PRODUÇÃO DE ÉTER HIDROXIETIL PROPARGÍLICO A PARTIR DE ÁLCOOL PROPARGÍLICO

Arquivada/ExtintaInvention Patent
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Application data

Number

PI8906210

Type

Invention Patent

Filing

11/27/1989

Publication

06/04/1991
View on INPI

Progress at the INPI

  1. Filing11/27/89
  2. Publication06/04/91
  3. Examination08/10/93
  4. Allowance05/02/00
  5. Grant08/22/00
  6. Expired12/26/12

The letters patent expired on 12/26/2012: 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: 12/26/2012. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Oxiteno S/A Industria e Comércio

SP, BR

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Inventors

A. S. (pessoa física)

BR

T. S. (pessoa física)

BR

Technical data

IPC Classification

C07C 43/178

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 22/08/2010

12/26/2012

RPI 2190

Concessão da patente

#16.1

08/22/2000

RPI 1546

Deferimento

#9.1

05/02/2000

RPI 1530

Exigência - art. 36 da LPI

#6.1

03/23/1999

RPI 1472

Solicitação de exame técnico

#4.1

08/10/1993

RPI 1184

14.1

05/04/1993

RPI 1170

14.1

04/27/1993

RPI 1169

Publicação do pedido de patente

#3.1

06/04/1991

RPI 1070

14.1

12/04/1990

RPI 1044

14.3

09/25/1990

RPI 1034

Pedido de patente depositado

#2.1

03/27/1990

RPI 1011

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