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Official data from INPI

PROCESSO PARA CONTROLAR A OPERACAO DE UM APARELHO PARA PRE-AQUECIMENTO E CALCINACAO DE MATERIALS DE CIMENTO

ConcedidaInvention Patent

Application data

Number

PI7702161

Type

Invention Patent

Filing

04/06/1976

Publication

-

Progress at the INPI

  1. Filing04/06/76
  2. Publication
  3. Examination
  4. Allowance02/16/83
  5. Grant07/26/83
  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: 07/26/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

I. I. (pessoa física)

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Inventors

N. N. (pessoa física)

T. S. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/26/1983

RPI 666

Notificação para pagamento de retribuição

#13.1

06/14/1983

RPI 660

Republicação - classificação IPC

#15.11

02/22/1983

RPI 644

Deferimento

#9.1

02/16/1983

RPI 643

15.0

03/23/1982

RPI 596

6.2

03/16/1982

RPI 595

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

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