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Official data from INPI

UNIDADE E MAQUINA DE FIACAO PARA A FIACAO CONTINUA DE RAYON VISCOSE

ConcedidaInvention Patent

Application data

Number

PI7902155

Type

Invention Patent

Filing

04/07/1978

Publication

-

Progress at the INPI

  1. Filing04/07/78
  2. Publication
  3. Examination02/09/82
  4. Allowance02/21/84
  5. Grant08/28/84
  6. Expired06/21/94

The letters patent expired on 06/21/1994: 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: 08/28/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

S. V. (pessoa física)

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Inventors

P. U. (pessoa física)

V. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/28/1984

RPI 723

Notificação para pagamento de retribuição

#13.1

06/12/1984

RPI 712

Republicação - classificação IPC

#15.11

04/24/1984

RPI 705

Deferimento

#9.1

02/21/1984

RPI 696

Republicação - classificação IPC

#15.11

01/10/1984

RPI 690

Exigência - art. 36 da LPI

#6.1

08/16/1983

RPI 669

6.2

01/18/1983

RPI 639

Solicitação de exame técnico

#4.1

02/09/1982

RPI 590

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

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