(11) 98705-3426
TrademarkIQ iconTrademarkIQ
Back to search
Official data from INPI

PROCESSO PARA A POLIMERIZAÇÃO ANIÔNICA DE UM DIENO CONJUGADO, UM MONÔMERO ALQUENIL-AROMÁTICO E/OU UMA ALFA OLEFINA ATIVADA.

Em AnáliseInvention Patent

Application data

Number

PI8603429

Type

Invention Patent

Filing

07/21/1986

Publication

03/04/1987

Progress at the INPI

  1. Filing07/21/86
  2. Publication03/04/87
  3. Examination04/04/89
  4. Allowance07/20/93
  5. Grant02/16/94
  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.

Talk to a specialist

Latest action published by the INPI: 04/04/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

See this company's full portfolio

Inventors

A. J. (pessoa física)

Technical data

IPC Classification

Priority claims

US

758182 · 07/23/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

04/04/1989

RPI 963

Publicação do pedido de patente

#3.1

03/04/1987

RPI 854

Pedido de patente depositado

#2.1

12/30/1986

RPI 845

Carta-patente expirada

#21.1

Patente extinta em 21/07/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

02/16/1994

RPI 1211

Deferimento

#9.1

07/20/1993

RPI 1181

Republicação - classificação IPC

#15.11

11/19/1991

RPI 1094

Exigência - art. 36 da LPI

#6.1

07/30/1991

RPI 1078

6.2

01/02/1990

RPI 1000

Patent monitoring

Track this patent in real time.

Receive alerts on INPI events, decisions, and expiry dates for your portfolio.