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Official data from INPI

PROCESSO APERFEIÇOADO DE POLIMERIZAÇÃO DE DIOLIFINAS CONJUGADAS COM SISTEMA CATALÍTICO DE TERRAS RARAS

Em AnáliseInvention Patent
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Application data

Number

PI8702191

Type

Invention Patent

Filing

04/15/1987

Publication

02/17/1988
View on INPI

Progress at the INPI

  1. Filing04/15/87
  2. Publication02/17/88
  3. Examination07/12/88
  4. Allowance08/01/95
  5. Grant04/30/96
  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.

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Latest action published by the INPI: 07/12/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Enichem Elastomeri S.p.A.

IT

The Goodyear Tire & Rubber Company

US

See this company's full portfolio

Inventors

M. T. (pessoa física)

US

Technical data

IPC Classification

C08F 36/04C08F 36/06

Priority claims

US

852.678 · 04/16/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

07/12/1988

RPI 925

Publicação do pedido de patente

#3.1

02/17/1988

RPI 904

Pedido de patente depositado

#2.1

07/28/1987

RPI 875

Carta-patente expirada

#21.1

Patente extinta em 15/04/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

04/30/1996

RPI 1326

Notificação para pagamento de retribuição

#13.1

01/02/1996

RPI 1309

Deferimento

#9.1

08/01/1995

RPI 1287

Exigência - art. 36 da LPI

#6.1

02/16/1993

RPI 1159

Exigência - art. 36 da LPI

#6.1

06/09/1992

RPI 1123

Exigência - art. 36 da LPI

#6.1

11/05/1991

RPI 1092

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