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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE AMIDA

Arquivada/ExtintaInvention Patent

Application data

Number

PI9100446

Type

Invention Patent

Filing

02/04/1991

Publication

10/22/1991

Progress at the INPI

  1. Filing02/04/91
  2. Publication10/22/91
  3. Examination11/16/93
  4. Allowance09/14/99
  5. Grant02/22/00
  6. Expired05/28/13

The letters patent expired on 05/28/2013: 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: 05/28/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

See this company's full portfolio

Inventors

E. D. (pessoa física)

NL

Technical data

IPC Classification

Priority claims

GB

9002522.2 · 02/05/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 04/02/2011

05/28/2013

RPI 2212

Concessão da patente

#16.1

02/22/2000

RPI 1520

Deferimento

#9.1

09/14/1999

RPI 1497

Exigência - art. 36 da LPI

#6.1

11/03/1998

RPI 1452

11.8

01/16/1996

RPI 1311

Arquivamento - Art. 36 §1° da LPI

#11.2

12/19/1995

RPI 1307

Solicitação de exame técnico

#4.1

11/16/1993

RPI 1198

Publicação do pedido de patente

#3.1

10/22/1991

RPI 1090

Pedido de patente depositado

#2.1

08/06/1991

RPI 1079

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