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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE UM ÁCIDO PIRIDINO-2,3-DICARBOXÍLICO

PublicadaInvention Patent

Application data

Number

PI8801792

Type

Invention Patent

Filing

04/14/1988

Publication

11/16/1988

Progress at the INPI

  1. Filing04/14/88
  2. Publication11/16/88
  3. Examination12/04/90
  4. Allowance02/29/00
  5. Grant07/11/00
  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.

Talk to a specialist

Latest action published by the INPI: 11/16/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

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Inventors

A. F. (pessoa física)

GB

D. A. (pessoa física)

GB

Technical data

Priority claims

GB

8709228 · 04/16/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

11/16/1988

RPI 943

Pedido de patente depositado

#2.1

08/30/1988

RPI 932

Carta-patente expirada

#21.1

Patente extinta em 11/07/2010

12/11/2012

RPI 2188

Concessão da patente

#16.1

07/11/2000

RPI 1540

Deferimento

#9.1

02/29/2000

RPI 1521

Conhecimento de parecer técnico

#7.1

09/21/1999

RPI 1498

Exigência - art. 36 da LPI

#6.1

12/13/1994

RPI 1254

Solicitação de exame técnico

#4.1

12/04/1990

RPI 1044

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