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Official data from INPI

PROCESSO PARA A POLIMERIZAÇÃO DE ETILENO TANTO SOZINHO QUANTO EM COMBINAÇÃO COM UMA OU MAIS OLEFINAS

Arquivada/ExtintaInvention PatentPCT · US1987000353

Application data

Number

PI8707823

Type

Invention Patent

Filing

06/10/1987

Publication

08/15/1989

PCT

US1987000353

Progress at the INPI

  1. Filing06/10/87
  2. Publication08/15/89
  3. Examination01/02/90
  4. Allowance01/09/96
  5. Grant11/26/96
  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.

Talk to a specialist

Latest action published by the INPI: 08/15/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Exxon Chemical Patents, Inc

US

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Inventors

C. S. (pessoa física)

US

H. J. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

054.785 · 06/04/1987

US

909.752 · 09/19/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação de entrada na fase nacional - PCT

#1.3

08/15/1989

RPI 982

Carta-patente expirada

#21.1

Patente extinta em 10/06/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

11/26/1996

RPI 1356

Notificação para pagamento de retribuição

#13.1

07/02/1996

RPI 1335

Deferimento

#9.1

01/09/1996

RPI 1310

Exigência - art. 36 da LPI

#6.1

10/25/1994

RPI 1247

Solicitação de exame técnico

#4.1

01/02/1990

RPI 1000

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