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Official data from INPI

DISPOSITIVO PARA DETERMINACAO DE ALTERACAO DE FASE DE UM METAL DERRETIDO

ConcedidaInvention Patent

Application data

Number

PI7700124

Type

Invention Patent

Filing

01/10/1977

Publication

-

Progress at the INPI

  1. Filing01/10/77
  2. Publication
  3. Examination
  4. Allowance
  5. Grant07/27/82
  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: 07/27/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

E. N. (pessoa física)

Inventors

C. O. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/27/1982

RPI 614

Notificação para pagamento de retribuição

#13.1

02/02/1982

RPI 589

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era B22D 1/02.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

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