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

PROCESSO CONTÍNUO DE POLIMERIZAÇÃO EM MASSA DE 1,3-BUTADIENO PARA PREPARAÇÃO DE POLIBUTADIENO COM ALTO TEOR DE LIGAÇÕES CIS-1,4 UTILIZANDO-SE UM SISTEMA CATALISADOR DE NÍQUEL.

PublicadaInvention Patent

Application data

Number

PI8700753

Type

Invention Patent

Filing

02/18/1987

Publication

12/15/1987

Progress at the INPI

  1. Filing02/18/87
  2. Publication12/15/87
  3. Examination08/21/90
  4. Allowance11/03/93
  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.

Talk to a specialist

Latest action published by the INPI: 12/15/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Goodyear Tire & Rubber Company

US

See this company's full portfolio

Inventors

C. W. (pessoa física)

US

M. T. (pessoa física)

US

R. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

830.814 · 02/19/1986

US

923.368 · 10/27/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

12/15/1987

RPI 895

Pedido de patente depositado

#2.1

06/09/1987

RPI 868

Carta-patente expirada

#21.1

Patente extinta em 18/02/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

05/31/1994

RPI 1226

Deferimento

#9.1

11/03/1993

RPI 1196

Exigência - art. 36 da LPI

#6.1

10/13/1992

RPI 1141

Exigência - art. 36 da LPI

#6.1

11/05/1991

RPI 1092

Solicitação de exame técnico

#4.1

08/21/1990

RPI 1029

Patent monitoring

Track this patent in real time.

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