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Official data from INPI

PROCESSO PARA PRODUZIR SULFETO DE POLIARILENO DE ELEVADO PESO MOLECULAR E BAIXA FLUIDEZ

Em AnáliseInvention Patent
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Application data

Number

PI8603952

Type

Invention Patent

Filing

08/19/1986

Publication

03/24/1987
View on INPI

Progress at the INPI

  1. Filing08/19/86
  2. Publication03/24/87
  3. Examination02/02/88
  4. Allowance10/26/93
  5. Grant06/28/94
  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.

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Latest action published by the INPI: 02/02/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Idemitsu Petrochemical Company Limited

JP

Inventors

H. Y. (pessoa física)

JP

M. S. (pessoa física)

JP

N. O. (pessoa física)

JP

Technical data

IPC Classification

C08G 75/02

Priority claims

JP

P60-182755 · 08/20/1985

JP

P60-234930 · 10/21/1985

JP

P60-294647 · 12/27/1985

JP

P61-28322 · 02/12/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

02/02/1988

RPI 902

Publicação do pedido de patente

#3.1

03/24/1987

RPI 857

Pedido de patente depositado

#2.1

03/04/1987

RPI 854

Carta-patente expirada

#21.1

Patente extinta em 19/08/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

06/28/1994

RPI 1230

Notificação para pagamento de retribuição

#13.1

03/15/1994

RPI 1215

Deferimento

#9.1

10/26/1993

RPI 1195

Exigência - art. 36 da LPI

#6.1

05/04/1993

RPI 1170

Exigência - art. 36 da LPI

#6.1

08/11/1992

RPI 1132

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