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Official data from INPI

APERFEICOAMENTO NO SISTEMA DE MOAGEM DE MASSAS MINERAIS

ConcedidaInvention Patent

Application data

Number

PI7700795

Type

Invention Patent

Filing

02/08/1977

Publication

-

Progress at the INPI

  1. Filing02/08/77
  2. Publication
  3. Examination
  4. Allowance06/01/82
  5. Grant01/25/83
  6. Expired07/27/93

The letters patent expired on 07/27/1993: 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: 01/25/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Y. N. (pessoa física)

Inventors

Y. N. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

01/25/1983

RPI 640

Notificação para pagamento de retribuição

#13.1

09/21/1982

RPI 622

Deferimento

#9.1

06/01/1982

RPI 606

Exigência - art. 36 da LPI

#6.1

10/27/1981

RPI 575

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

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