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Official data from INPI

PROCESSO DE POLIMERIZACAO DE DIENOS CONJUGADOS OU DE COPOLIMERIZACAO DE DIENOS CONJUGADOS

Em AnáliseInvention Patent
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Application data

Number

PI7700888

Type

Invention Patent

Filing

02/12/1976

Publication

-
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Progress at the INPI

  1. Filing02/12/76
  2. Publication
  3. Examination
  4. Allowance04/12/83
  5. Grant11/29/83
  6. Expired07/27/93

The letters patent expired on 07/27/1993: 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: 11/16/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MICHELIN & CIE

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Inventors

Z. Y. (pessoa física)

Technical data

IPC Classification

C08F 236/10C08F 36/04

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

11/16/1988

RPI 943

Cessão de direito de exploração

#22.1

05/27/1986

RPI 814

Concessão da patente

#16.1

11/29/1983

RPI 684

Notificação para pagamento de retribuição

#13.1

08/30/1983

RPI 671

Deferimento

#9.1

04/12/1983

RPI 651

15.0

06/08/1982

RPI 607

Exigência - art. 36 da LPI

#6.1

04/13/1982

RPI 599

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

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