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Official data from INPI

PROCESSO PARA TRANSFORMAR QUIMICAMENTE LENHINO-CELULOSE EM FIBRAS SEPARADAS.

ConcedidaInvention Patent

Application data

Number

PI7907651

Type

Invention Patent

Filing

11/26/1979

Publication

-

Progress at the INPI

  1. Filing11/26/79
  2. Publication
  3. Examination
  4. Allowance01/03/84
  5. Grant06/26/84
  6. Expired03/19/96

The letters patent expired on 03/19/1996: 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: 06/26/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Bau- Und Forschungsgesellschaft Thermoform Ag.

CH

Inventors

P. L. (pessoa física)

P. C. (pessoa física)

Technical data

IPC Classification

Priority claims

DE

P 29 20 731 · 05/22/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/26/1984

RPI 714

Notificação para pagamento de retribuição

#13.1

04/24/1984

RPI 705

Deferimento

#9.1

01/03/1984

RPI 689

Exigência - art. 36 da LPI

#6.1

01/11/1983

RPI 638

Carta-patente expirada

#21.1

03/19/1996

RPI 1320

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