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Official data from INPI

PROCESSO PARA PREPARAR UMA COMPOSIÇÃO DE ALFA-POLIAMIDA ENRIJECIDA

Arquivada/ExtintaInvention Patent

Application data

Number

PI9101059

Type

Invention Patent

Filing

03/18/1991

Publication

11/05/1991

Progress at the INPI

  1. Filing03/18/91
  2. Publication11/05/91
  3. Examination03/29/94
  4. Allowance09/28/99
  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

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Inventors

M. M. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

495,060 · 03/19/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 18/03/2011

05/28/2013

RPI 2212

Concessão da patente

#16.1

02/22/2000

RPI 1520

Deferimento

#9.1

09/28/1999

RPI 1499

Exigência - art. 36 da LPI

#6.1

05/04/1999

RPI 1478

Exigência - art. 36 da LPI

#6.1

08/11/1998

RPI 1442

Solicitação de exame técnico

#4.1

03/29/1994

RPI 1217

Publicação do pedido de patente

#3.1

11/05/1991

RPI 1092

Pedido de patente depositado

#2.1

09/03/1991

RPI 1083

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