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Official data from INPI

COPOLIMEROS DE PROPILENO E BUTENO-1,RESPECTIVOS PROCESSOS DE FABRICO E DE APLICACAO A PRODUCAO DE PELICULAS TERMO-SELAVEIS E RESPECTIVAS PELICULAS

ConcedidaInvention Patent

Application data

Number

PI8000257

Type

Invention Patent

Filing

07/30/1979

Publication

-

Progress at the INPI

  1. Filing07/30/79
  2. Publication
  3. Examination03/09/82
  4. Allowance11/13/84
  5. Grant06/25/85
  6. Expired05/16/95

The letters patent expired on 05/16/1995: 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: 06/25/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NAPHTACHIMIE SA

Inventors

D. B. (pessoa física)

D. D. (pessoa física)

M. B. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/25/1985

RPI 766

Notificação para pagamento de retribuição

#13.1

03/26/1985

RPI 753

Deferimento

#9.1

11/13/1984

RPI 734

Exigência - art. 36 da LPI

#6.1

01/24/1984

RPI 692

6.2

12/07/1982

RPI 633

4.2.3

05/25/1982

RPI 605

Solicitação de exame técnico

#4.1

03/09/1982

RPI 594

Carta-patente expirada

#21.1

05/16/1995

RPI 1276

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