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Official data from INPI

PROCESSO DE PREPARAÇÃO DE POLÍMEROS OU COPOLÍMEROS BIMODAIS OU MULTIMODAIS DE DIENOS CONJUGADOS, SEJA ENTRE SI, OU COM UM COMPOSTO VINIL AROMÁTICO

Em AnáliseInvention Patent

Application data

Number

PI8102167

Type

Invention Patent

Filing

04/09/1981

Publication

10/13/1981

Progress at the INPI

  1. Filing04/09/81
  2. Publication10/13/81
  3. Examination10/04/83
  4. Allowance02/12/86
  5. Grant04/19/88
  6. Expired10/01/96

The letters patent expired on 10/01/1996: 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: 11/22/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Compagnie Generale Des Etablissements Michelin - Michelin & Cie

FR

Michelin & Cie (Compagnie Générale des Etablissements Michelin).

FR

See this company's full portfolio

Inventors

F. C. (pessoa física)

Technical data

Priority claims

FR

80-08 111 · 04/09/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

11/22/1988

RPI 944

16.3

05/31/1988

RPI 919

Concessão da patente

#16.1

04/19/1988

RPI 913

Notificação para pagamento de retribuição

#13.1

06/24/1986

RPI 818

Deferimento

#9.1

02/12/1986

RPI 799

Exigência - art. 36 da LPI

#6.1

06/19/1984

RPI 713

Solicitação de exame técnico

#4.1

10/04/1983

RPI 676

Publicação do pedido de patente

#3.1

10/13/1981

RPI 573

Carta-patente expirada

#21.1

10/01/1996

RPI 1348

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