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Official data from INPI

PROCESSO CATALÍTICO PARA PREPARAÇÃO DE NITROALCANOS

Em ExigênciaInvention Patent

Application data

Number

PI8304729

Type

Invention Patent

Filing

08/26/1983

Publication

04/09/1985

Progress at the INPI

  1. Filing08/26/83
  2. Publication04/09/85
  3. Examination06/16/87
  4. Allowance03/01/90
  5. Grant10/30/90
  6. Terminated05/02/95

The patent was granted on 10/30/1990 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 02/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company

US

See this company's full portfolio

Inventors

W. H. (pessoa física)

US

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

02/28/1989

RPI 958

Solicitação de exame técnico

#4.1

06/16/1987

RPI 869

Publicação do pedido de patente

#3.1

04/09/1985

RPI 755

Pedido de patente depositado

#2.1

11/01/1983

RPI 680

Anuidade - prazo legal encerrado

#18.2

05/02/1995

RPI 1274

Concessão da patente

#16.1

10/30/1990

RPI 1039

Notificação para pagamento de retribuição

#13.1

06/19/1990

RPI 1023

Deferimento

#9.1

03/01/1990

RPI 1007

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