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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE ACROLEÍNA MEDIANTE OXIDAÇÃO DE FASE GASOSA CATALÍTICA DE PROPENO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9004582

Type

Invention Patent

Filing

09/13/1990

Publication

09/10/1991

Progress at the INPI

  1. Filing09/13/90
  2. Publication09/10/91
  3. Examination06/09/92
  4. Allowance04/06/99
  5. Grant09/08/99
  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.

Talk to a specialist

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

Applicants and inventors

Applicants

D. A. (pessoa física)

DE

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Inventors

D. A. (pessoa física)

DE

D. P. (pessoa física)

US

D. B. (pessoa física)

DE

W. B. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P 39 30 534.1 · 09/13/1989

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

09/08/1999

RPI 1496

Deferimento

#9.1

04/06/1999

RPI 1474

Exigência - art. 36 da LPI

#6.1

05/13/1997

RPI 1380

Solicitação de exame técnico

#4.1

06/09/1992

RPI 1123

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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