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Official data from INPI

PROCESSO DE TRATAMENTO TÉRMICO DE METAL, PROCESSO DE OBTER UMA DUREZA DE NÃO MAIS DO QUE 23 NA ESCALA DE DUREZA ROCKWELL "C" E PROCESSO DE AQUECIMENTO POR INDUÇÃO DEUMA PEÇA TUBULAR.

ArquivadaInvention Patent

Application data

Number

PI8104297

Type

Invention Patent

Filing

07/06/1981

Publication

03/23/1982

Progress at the INPI

  1. Filing07/06/81
  2. Publication03/23/82
  3. Abandoned
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: examination was not requested within the 36 months following the 07/06/1981 filing, the deadline set by art. 33 of the Brazilian IP Act. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 04/02/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Halliburton Company

US

See this company's full portfolio

Inventors

C. F. (pessoa física)

M. C. (pessoa física)

Technical data

IPC Classification

Priority claims

US

166,739 · 07/07/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 33 da LPI

#11.1

04/02/1985

RPI 754

Publicação do pedido de patente

#3.1

03/23/1982

RPI 596

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