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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE UM CATALISADOR DE ALCOXILAÇÃO E PROCESSO PARA A ALCOXILAÇÃO DE UM ÁLCOOL

PublicadaInvention Patent
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Application data

Number

PI8802060

Type

Invention Patent

Filing

04/28/1988

Publication

11/29/1988
View on INPI

Progress at the INPI

  1. Filing04/28/88
  2. Publication11/29/88
  3. Examination10/16/90
  4. Allowance04/07/98
  5. Grant11/24/98
  6. Expired12/11/12

The letters patent expired on 12/11/2012: 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: 11/29/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Vista Chemical Company

US

Inventors

B. L. (pessoa física)

US

D. W. (pessoa física)

US

M. S. (pessoa física)

US

Technical data

IPC Classification

B01J 31/26C07C 41/03

Priority claims

US

043.660 · 04/28/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

11/29/1988

RPI 945

Pedido de patente depositado

#2.1

09/13/1988

RPI 934

Carta-patente expirada

#21.1

Patente extinta em 24/11/2008

12/11/2012

RPI 2188

Concessão da patente

#16.1

11/24/1998

RPI 1455

Deferimento

#9.1

04/07/1998

RPI 1424

Exigência - art. 36 da LPI

#6.1

02/21/1995

RPI 1264

Exigência - art. 36 da LPI

#6.1

02/08/1994

RPI 1210

Solicitação de exame técnico

#4.1

10/16/1990

RPI 1037

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