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Official data from INPI

DISPERSÃO SÓLIDA ISENTA DE ÁGUA DE CATALISADOR DE RANEY E SEU PROCESSO DE PREPARAÇÃO

PublicadaInvention Patent

Application data

Number

PI8902057

Type

Invention Patent

Filing

05/02/1989

Publication

12/05/1989

Progress at the INPI

  1. Filing05/02/89
  2. Publication12/05/89
  3. Examination12/17/91
  4. Allowance09/08/98
  5. Grant12/29/98
  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.

Talk to a specialist

Latest action published by the INPI: 12/05/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

D. A. (pessoa física)

DE

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Inventors

G. L. (pessoa física)

DE

R. H. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P3815110.3 · 05/04/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

12/05/1989

RPI 998

Pedido de patente depositado

#2.1

06/13/1989

RPI 973

Carta-patente expirada

#21.1

Patente extinta em 02/05/2009

12/26/2012

RPI 2190

Concessão da patente

#16.1

12/29/1998

RPI 1460

Deferimento

#9.1

09/08/1998

RPI 1446

Exigência - art. 36 da LPI

#6.1

04/14/1998

RPI 1425

Exigência - art. 36 da LPI

#6.1

02/12/1997

RPI 1367

Exigência - art. 36 da LPI

#6.1

02/27/1996

RPI 1317

Solicitação de exame técnico

#4.1

12/17/1991

RPI 1098

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