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Official data from INPI

APERFEICOAMENTOS EM BETONEIRAS DE EIXO VERTICAL

ConcedidaInvention Patent

Application data

Number

PI7500415

Type

Invention Patent

Filing

01/22/1975

Publication

-

Progress at the INPI

  1. Filing01/22/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant11/30/82
  6. Expired08/03/93

The letters patent expired on 08/03/1993: 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: 11/30/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PENEDO & CIA LTDA

Inventors

P. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/30/1982

RPI 632

Notificação para pagamento de retribuição

#13.1

09/14/1982

RPI 621

110

06/08/1982

RPI 607

12.5

11/17/1981

RPI 578

Carta-patente expirada

#21.1

08/03/1993

RPI 1183

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