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Official data from INPI

PROCESSO CONTÍNUO PARA A POLIMERIZAÇÃO DE BUTENOS LÍQUIDOS

PublicadaInvention Patent
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Application data

Number

PI8706747

Type

Invention Patent

Filing

12/11/1987

Publication

07/19/1988
View on INPI

Progress at the INPI

  1. Filing12/11/87
  2. Publication07/19/88
  3. Examination09/11/90
  4. Allowance10/26/93
  5. Grant05/31/94
  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.

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Latest action published by the INPI: 07/19/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Exxon Chemical Patents Inc

US

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Inventors

F. C. (pessoa física)

US

R. L. (pessoa física)

US

Technical data

IPC Classification

C08F 10/08

Priority claims

US

93.804 · 09/04/1987

US

941.288 · 12/12/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

07/19/1988

RPI 926

Pedido de patente depositado

#2.1

04/12/1988

RPI 912

Carta-patente expirada

#21.1

Patente extinta em 11/12/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

05/31/1994

RPI 1226

Deferimento

#9.1

10/26/1993

RPI 1195

Exigência - art. 36 da LPI

#6.1

03/02/1993

RPI 1161

Exigência - art. 36 da LPI

#6.1

02/11/1992

RPI 1106

Solicitação de exame técnico

#4.1

09/11/1990

RPI 1032

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