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Official data from INPI

PROCESSO PARA A PREVENÇÃO OU REDUÇÃO DE FORMAÇÃO DE GEL EM ELASTÔMEROS POLIMÉRICOS.

PublicadaInvention Patent
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Application data

Number

PI8901386

Type

Invention Patent

Filing

03/27/1989

Publication

11/07/1989
View on INPI

Progress at the INPI

  1. Filing03/27/89
  2. Publication11/07/89
  3. Examination11/19/91
  4. Allowance03/31/98
  5. Grant11/24/98
  6. Expired12/18/12

The letters patent expired on 12/18/2012: 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: 11/07/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Goodyear Tire & Rubber Company

US

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Inventors

C. J. (pessoa física)

US

D. G. (pessoa física)

US

J. D. (pessoa física)

US

J. J. (pessoa física)

US

K. C. (pessoa física)

US

Technical data

IPC Classification

C08K 5/10

Priority claims

US

172.749 · 03/28/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

11/07/1989

RPI 994

Pedido de patente depositado

#2.1

05/09/1989

RPI 968

Carta-patente expirada

#21.1

Patente extinta em 27/03/2009

12/18/2012

RPI 2189

Concessão da patente

#16.1

11/24/1998

RPI 1455

Deferimento

#9.1

03/31/1998

RPI 1423

Exigência - art. 36 da LPI

#6.1

12/05/1995

RPI 1305

Exigência - art. 36 da LPI

#6.1

10/11/1994

RPI 1245

Solicitação de exame técnico

#4.1

11/19/1991

RPI 1094

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