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Official data from INPI

PROCESSO DE PRODUÇÃO DUM FIO CREPEADO SINTÉTICO.

ConcedidaInvention Patent

Application data

Number

PI7904512

Type

Invention Patent

Filing

07/16/1979

Publication

-

Progress at the INPI

  1. Filing07/16/79
  2. Publication
  3. Examination03/30/82
  4. Allowance07/09/85
  5. Grant02/04/86
  6. Expired04/18/95

The letters patent expired on 04/18/1995: 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: 02/04/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Akzo N.V.

NL

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Inventors

M. W. (pessoa física)

Technical data

IPC Classification

Priority claims

NL

P 28 31 865.26 · 07/21/1978

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/04/1986

RPI 798

Notificação para pagamento de retribuição

#13.1

11/12/1985

RPI 786

Deferimento

#9.1

07/09/1985

RPI 768

Exigência - art. 36 da LPI

#6.1

07/31/1984

RPI 719

Conhecimento de parecer técnico

#7.1

01/31/1984

RPI 693

6.2

02/01/1983

RPI 641

Solicitação de exame técnico

#4.1

03/30/1982

RPI 597

Carta-patente expirada

#21.1

04/18/1995

RPI 1272

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