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Official data from INPI

PROCESSO PARA PREPARAÇÃO DE UM CATALISADOR, PROCESSO PARA POLIMERIZAR UMA ALFA-OLEFINA, DIOLEFINA E/OU UM MONÔMERO ACETILENICAMENTE INSATURADO

Arquivada/ExtintaInvention Patent
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Application data

Number

PI8805026

Type

Invention Patent

Filing

01/27/1988

Publication

10/17/1989
View on INPI

Progress at the INPI

  1. Filing01/27/88
  2. Publication10/17/89
  3. Examination02/05/91
  4. Allowance10/24/00
  5. Grant02/20/01
  6. Expired12/11/12

The letters patent expired on 12/11/2012: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 10/17/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Exxon Chemical Patents Inc

US

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Inventors

G. H. (pessoa física)

US

H. T. (pessoa física)

US

Technical data

IPC Classification

C07F 17/00C08F 10/00C08F 4/64C08F 4/76

Priority claims

US

008.800 · 01/30/1987

US

133.480 · 12/22/1987

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 20/02/2011

12/11/2012

RPI 2188

Concessão da patente

#16.1

02/20/2001

RPI 1572

Deferimento

#9.1

10/24/2000

RPI 1555

Exigência - art. 36 da LPI

#6.1

02/14/1995

RPI 1263

Exigência - art. 36 da LPI

#6.1

09/20/1994

RPI 1242

Solicitação de exame técnico

#4.1

02/05/1991

RPI 1053

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