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Official data from INPI

PROCESSO PARA A PRODUÇÃO DE UM LÁTEX DE 1,2-POLI-BUTADIENO SINDIOTÁTICO POR POLIMERIZAÇÃO EM EMULSÃO

Prazo de SigiloInvention Patent

Application data

Number

PI8904159

Type

Invention Patent

Filing

08/18/1989

Publication

04/10/1990

Progress at the INPI

  1. Filing08/18/89
  2. Publication04/10/90
  3. Examination08/04/92
  4. Allowance08/18/98
  5. Grant12/29/98
  6. Expired12/26/12

The letters patent expired on 12/26/2012: 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: 11/07/1989. 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

G. B. (pessoa física)

US

G. M. (pessoa física)

US

R. G. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

235.397 · 08/24/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

11/07/1989

RPI 994

Carta-patente expirada

#21.1

Patente extinta em 18/08/2009

12/26/2012

RPI 2190

Concessão da patente

#16.1

12/29/1998

RPI 1460

Deferimento

#9.1

08/18/1998

RPI 1443

Exigência - art. 36 da LPI

#6.1

01/17/1995

RPI 1259

4.1.2

09/15/1992

RPI 1137

Solicitação de exame técnico

#4.1

08/04/1992

RPI 1131

Publicação do pedido de patente

#3.1

04/10/1990

RPI 1013

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