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Official data from INPI

PROCESSO DE PREPARAÇÃO DE CRISOTILA DE ALTA SUPERFÍCIE ESPECÍFICA

Prazo de SigiloInvention Patent

Application data

Number

PI8903849

Type

Invention Patent

Filing

08/01/1989

Publication

10/09/1990

Progress at the INPI

  1. Filing08/01/89
  2. Publication10/09/90
  3. Examination03/09/93
  4. Allowance09/26/95
  5. Grant09/24/96
  6. Expired12/22/09

The letters patent expired on 12/22/2009: 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: 11/21/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Universidade Estadual de Campinas - Unicamp

SP, BR

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Inventors

I. J. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

11/21/1989

RPI 996

Carta-patente expirada

#21.1

Patente extinta em 01/08/2004

12/22/2009

RPI 2033

Concessão da patente

#16.1

09/24/1996

RPI 1347

Notificação para pagamento de retribuição

#13.1

03/05/1996

RPI 1318

Deferimento

#9.1

09/26/1995

RPI 1295

Exigência - art. 36 da LPI

#6.1

02/21/1995

RPI 1264

Solicitação de exame técnico

#4.1

03/09/1993

RPI 1162

Publicação antecipada

#3.2

10/09/1990

RPI 1036

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