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Official data from INPI

PROCESSO E DISPOSITIVO PARA MISTURAR FIBRAS

ConcedidaInvention Patent

Application data

Number

PI7904609

Type

Invention Patent

Filing

07/21/1978

Publication

-

Progress at the INPI

  1. Filing07/21/78
  2. Publication
  3. Examination04/27/82
  4. Allowance03/27/84
  5. Grant09/25/84
  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.

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Latest action published by the INPI: 09/25/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

TRUETZSCHLER & CO

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Inventors

T. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/25/1984

RPI 727

Deferimento

#9.1

03/27/1984

RPI 701

Exigência - art. 36 da LPI

#6.1

10/11/1983

RPI 677

6.2

01/18/1983

RPI 639

Solicitação de exame técnico

#4.1

04/27/1982

RPI 601

Carta-patente expirada

#21.1

04/18/1995

RPI 1272

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