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Official data from INPI

TUBO DE MATERIA PLASTICA ARMADO COM FIBRAS DE VIDRO

ConcedidaInvention Patent

Application data

Number

PI7704284

Type

Invention Patent

Filing

07/02/1976

Publication

-

Progress at the INPI

  1. Filing07/02/76
  2. Publication
  3. Examination
  4. Allowance09/08/82
  5. Grant03/29/83
  6. Expired07/13/93

The letters patent expired on 07/13/1993: 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: 03/29/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

HOBAS ENG AG

Inventors

C. B. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/29/1983

RPI 649

Notificação para pagamento de retribuição

#13.1

01/11/1983

RPI 638

Deferimento

#9.1

09/08/1982

RPI 620

Carta-patente expirada

#21.1

07/13/1993

RPI 1180

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