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Official data from INPI

PELÍCULA DE POLIPROPILENO ORIENTADA, SELÁVEL TERMICAMENTE, E, PROCESSO PARA SUA PREPARAÇÃO.

ConcedidaInvention Patent

Application data

Number

PI7905712

Type

Invention Patent

Filing

09/06/1978

Publication

-

Progress at the INPI

  1. Filing09/06/78
  2. Publication
  3. Examination11/17/81
  4. Allowance01/10/84
  5. Grant07/31/84
  6. Expired04/25/95

The letters patent expired on 04/25/1995: 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: 07/31/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

British Cellophane Limited

Inventors

D. D. (pessoa física)

L. B. (pessoa física)

W. H. (pessoa física)

Technical data

Priority claims

GB

35846/78 · 09/06/1978

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/31/1984

RPI 719

Notificação para pagamento de retribuição

#13.1

05/02/1984

RPI 706

Deferimento

#9.1

01/10/1984

RPI 690

6.2

06/01/1982

RPI 606

Solicitação de exame técnico

#4.1

11/17/1981

RPI 578

Carta-patente expirada

#21.1

04/25/1995

RPI 1273

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