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Official data from INPI

PROCESSO PARA A POLIMERIZAÇÃO DE PELO MENOS UMA ALFA-OLEFINA

Em AnáliseInvention Patent

Application data

Number

PI8602645

Type

Invention Patent

Filing

06/05/1986

Publication

02/03/1987

Progress at the INPI

  1. Filing06/05/86
  2. Publication02/03/87
  3. Examination05/16/89
  4. Allowance01/08/91
  5. Grant08/27/91
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 05/16/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company

US

See this company's full portfolio

Inventors

W. I. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

741.991 · 06/06/1985

US

741.992 · 06/06/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

05/16/1989

RPI 969

Publicação do pedido de patente

#3.1

02/03/1987

RPI 850

Pedido de patente depositado

#2.1

12/09/1986

RPI 842

Carta-patente expirada

#21.1

Patente extinta em 05/06/2001

07/22/2008

RPI 1959

Republicação - classificação IPC

#15.11

11/12/1991

RPI 1093

Concessão da patente

#16.1

08/27/1991

RPI 1082

Notificação para pagamento de retribuição

#13.1

04/23/1991

RPI 1064

Deferimento

#9.1

01/08/1991

RPI 1049

6.2

01/02/1990

RPI 1000

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