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Official data from INPI

COMPOSIÇÃO DE EXPLOSIVO DE NITRATO DE AMÔNIO E PROCESSO PARA A PREPRAÇÃO DE EXPLOSIVOS À BASE DE NITRATO DE AMÔNIO

PublicadaInvention Patent

Application data

Number

PI8703975

Type

Invention Patent

Filing

08/04/1987

Publication

04/05/1988

Progress at the INPI

Under appeal
  1. Filing08/04/87
  2. Publication04/05/88
  3. Examination10/16/90
  4. Refused04/26/94
  5. Grant
  6. In force

The application was refused by the INPI on 04/26/1994. The invention was never patented.

Talk to a specialist

Latest action published by the INPI: 04/05/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Exxon Chemical Patents, Inc

US

See this company's full portfolio

Inventors

H. B. (pessoa física)

US

R. T. (pessoa física)

CA

Technical data

IPC Classification

Priority claims

US

893.406 · 08/05/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

04/05/1988

RPI 911

Pedido de patente depositado

#2.1

10/06/1987

RPI 885

Indeferimento

#9.2

04/26/1994

RPI 1221

Conhecimento de parecer técnico

#7.1

06/01/1993

RPI 1174

Solicitação de exame técnico

#4.1

10/16/1990

RPI 1037

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