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Official data from INPI

PROCESSO DE FURO DE SONDAGEM E APARELHO OBTURADOR DE FURO DE SONDAGEM

IndeferidaInvention Patent

Application data

Number

PI9101680

Type

Invention Patent

Filing

04/25/1991

Publication

12/10/1991

Progress at the INPI

Under appeal
  1. Filing04/25/91
  2. Publication12/10/91
  3. Examination04/07/92
  4. Refused12/13/94
  5. Grant
  6. In force

The application was refused by the INPI on 12/13/1994. The invention was never patented.

Talk to a specialist

Latest action published by the INPI: 12/13/1994. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Halliburton Company

US

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Inventors

D. H. (pessoa física)

US

S. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

515,019 · 04/26/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Indeferimento

#9.2

12/13/1994

RPI 1254

Conhecimento de parecer técnico

#7.1

05/24/1994

RPI 1225

Solicitação de exame técnico

#4.1

04/07/1992

RPI 1114

Publicação do pedido de patente

#3.1

12/10/1991

RPI 1097

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