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Official data from INPI

PROCESSO PARA SINTETIZAR 1,2-POLIBUTADIENO SINDIOTÁTICO EM UM MEIO AQUOSO POR POLIMERIZAÇÃO DE 1,3 BUTADIENO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9103645

Type

Invention Patent

Filing

08/23/1991

Publication

05/19/1992

Progress at the INPI

  1. Filing08/23/91
  2. Publication05/19/92
  3. Examination07/05/94
  4. Allowance11/23/99
  5. Grant05/16/00
  6. Expired06/04/13

The letters patent expired on 06/04/2013: 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: 06/04/2013. 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

A. B. (pessoa física)

US

E. O. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

579.650 · 09/10/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinte em 23/08/2011

06/04/2013

RPI 2213

Republicação - classificação IPC

#15.11

Alterado da Int Cl5 C08F 4/72, 36/20.

11/21/2000

RPI 1559

Concessão da patente

#16.1

05/16/2000

RPI 1532

Deferimento

#9.1

11/23/1999

RPI 1507

Exigência - art. 36 da LPI

#6.1

12/30/1997

RPI 1410

Solicitação de exame técnico

#4.1

07/05/1994

RPI 1231

Publicação do pedido de patente

#3.1

05/19/1992

RPI 1120

Pedido de patente depositado

#2.1

10/01/1991

RPI 1087

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