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Official data from INPI

MEIO DE BORACAO PARA O TRATAMENTO COM BORO DE PECAS DE PRODUCAO EM MASSA DE FERRO E METAIS NAO-FERROSOS

Em AnáliseInvention Patent

Application data

Number

PI7704718

Type

Invention Patent

Filing

07/23/1976

Publication

-

Progress at the INPI

  1. Filing07/23/76
  2. Publication
  3. Examination
  4. Allowance05/18/82
  5. Grant11/30/82
  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: 08/23/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DEGUSSA

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Inventors

K. H. (pessoa física)

S. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

08/23/1983

RPI 670

Concessão da patente

#16.1

11/30/1982

RPI 632

Notificação para pagamento de retribuição

#13.1

09/08/1982

RPI 620

Deferimento

#9.1

05/18/1982

RPI 604

15.0

02/09/1982

RPI 590

Carta-patente expirada

#21.1

07/13/1993

RPI 1180

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