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Official data from INPI

PROCESSO DE PREPARAÇÃO DE UM PRECURSOR CATALÍTICO DE CATALISADOR SUPORTADO POR SÍLICA, PROCESSO DE PREPARAÇÃO DE UM CATALISADOR, E, PROCESSO PARA POLIMERIZAR UMA ALFA-OLEFINA

Arquivada/ExtintaInvention PatentPCT · US1988003258

Application data

Number

PI8807212

Type

Invention Patent

Filing

09/21/1988

Publication

10/17/1989

PCT

US1988003258

Progress at the INPI

  1. Filing09/21/88
  2. Publication10/17/89
  3. Examination06/04/91
  4. Allowance03/12/96
  5. Grant10/29/96
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 10/17/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Q. C. (pessoa física)

US

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Inventors

C. B. (pessoa física)

US

R. F. (pessoa física)

US

T. P. (pessoa física)

US

Technical data

Priority claims

US

099,190 · 09/21/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação de entrada na fase nacional - PCT

#1.3

10/17/1989

RPI 991

Carta-patente expirada

#21.1

Patente extinta em 21/09/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

10/29/1996

RPI 1352

Deferimento

#9.1

03/12/1996

RPI 1319

Exigência - art. 36 da LPI

#6.1

04/25/1995

RPI 1273

Solicitação de exame técnico

#4.1

06/04/1991

RPI 1070

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