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Official data from INPI

Processo de nitração em fase gasosa homogênea para a formação de nitroparafinas.

IndeferidaInvention Patent

Application data

Number

PI8300272

Type

Invention Patent

Filing

01/21/1983

Publication

10/25/1983

Progress at the INPI

Under appeal
  1. Filing01/21/83
  2. Publication10/25/83
  3. Examination03/05/85
  4. Refused12/23/86
  5. Grant
  6. In force

The application was refused by the INPI on 12/23/1986. The invention was never patented.

Talk to a specialist

Latest action published by the INPI: 04/22/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W.R. Grace & Co.

US

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Inventors

S. B. (pessoa física)

Technical data

Priority claims

US

341.679 · 01/22/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Republicação - classificação IPC

#15.11

04/22/1987

RPI 861

Indeferimento

#9.2

12/23/1986

RPI 844

Conhecimento de parecer técnico

#7.1

11/26/1985

RPI 788

Solicitação de exame técnico

#4.1

03/05/1985

RPI 750

Publicação do pedido de patente

#3.1

10/25/1983

RPI 679

Pedido de patente depositado

#2.1

03/08/1983

RPI 646

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era C07C 79/04.

03/27/2018

RPI 2464

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