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Official data from INPI

COMPOSICAO DE COPOLIMERO DE ENXERTO EM PO,E,COMPOSICAO DE RESINA COM RESISTENCIA AO IMPACTO APERFEICOADA

ConcedidaInvention Patent

Application data

Number

PI7908603

Type

Invention Patent

Filing

12/29/1978

Publication

-

Progress at the INPI

  1. Filing12/29/78
  2. Publication
  3. Examination09/14/82
  4. Allowance09/06/88
  5. Grant04/25/89
  6. Expired05/09/95

The letters patent expired on 05/09/1995: 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: 04/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

KUREHA CHEMICAL IND CO LTD

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Inventors

O. M. (pessoa física)

S. K. (pessoa física)

Y. H. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/25/1989

RPI 966

Notificação para pagamento de retribuição

#13.1

12/27/1988

RPI 949

Deferimento

#9.1

09/06/1988

RPI 933

Conhecimento de parecer técnico

#7.1

10/18/1983

RPI 678

Solicitação de exame técnico

#4.1

09/14/1982

RPI 621

Carta-patente expirada

#21.1

05/09/1995

RPI 1275

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