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Official data from INPI

DESIDRATAÇÃO DE SUSPENSÕES DE CARVÃO FINO USANDO-SE DOIS TIPOS DE ORGANOPOLISSILOXANAS.

IndeferidaInvention Patent

Application data

Number

PI8108624

Type

Invention Patent

Filing

02/26/1981

Publication

04/06/1982

Progress at the INPI

Under appeal
  1. Filing02/26/81
  2. Publication04/06/82
  3. Examination11/22/83
  4. Refused05/26/87
  5. Grant
  6. In force

The application was refused by the INPI on 05/26/1987. The invention was never patented.

Talk to a specialist

Latest action published by the INPI: 06/09/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

D. C. (pessoa física)

US

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Inventors

S. J. (pessoa física)

Technical data

IPC Classification

Priority claims

US

153.810 · 05/27/1980

US

PCT/81/00237 · 02/26/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Republicação - classificação IPC

#15.11

06/09/1987

RPI 868

Indeferimento

#9.2

05/26/1987

RPI 866

Conhecimento de parecer técnico

#7.1

08/05/1986

RPI 824

Exigência - art. 36 da LPI

#6.1

07/30/1985

RPI 771

Exigência - art. 36 da LPI

#6.1

01/02/1985

RPI 741

Solicitação de exame técnico

#4.1

11/22/1983

RPI 683

Notificação de entrada na fase nacional - PCT

#1.3

04/06/1982

RPI 598

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