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Official data from INPI

PROCESSO DE OBTENÇÃO CATALÍTICA DE SAIS QUARTENÁRIOS DE AMÔNIO EM VEÍCULOS LIPOFÍLICOS

Em AnáliseInvention Patent

Application data

Number

PI8701533

Type

Invention Patent

Filing

04/03/1987

Publication

07/14/1987

Progress at the INPI

  1. Filing04/03/87
  2. Publication07/14/87
  3. Examination09/01/87
  4. Allowance04/20/93
  5. Grant11/30/93
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 09/01/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Química Nacional Quiminasa S/A

SP, BR

Inventors

A. A. (pessoa física)

BR

J. C. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

09/01/1987

RPI 880

Publicação antecipada

#3.2

07/14/1987

RPI 873

Pedido de patente depositado

#2.1

06/30/1987

RPI 871

Carta-patente expirada

#21.1

Patente extinta em 03/04/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

11/30/1993

RPI 1200

Notificação para pagamento de retribuição

#13.1

08/17/1993

RPI 1185

Deferimento

#9.1

04/20/1993

RPI 1168

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