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Official data from INPI

COMPOSIÇÃO ATIVADORA, COMPOSIÇÃO DE OXALATO E PROCESSO PARA A PRODUÇÃO DE LUZ QUIMILUMINESCENTE

PublicadaInvention Patent

Application data

Number

PI8700477

Type

Invention Patent

Filing

02/03/1987

Publication

12/08/1987

Progress at the INPI

  1. Filing02/03/87
  2. Publication12/08/87
  3. Examination03/20/90
  4. Allowance09/29/92
  5. Grant04/27/93
  6. Terminated10/17/95

The patent was granted on 04/27/1993 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: 12/08/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

American Cyanamid Company

US

See this company's full portfolio

Inventors

A. K. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

826,052 · 02/04/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

12/08/1987

RPI 894

Pedido de patente depositado

#2.1

06/23/1987

RPI 870

Anuidade - prazo legal encerrado

#18.2

10/17/1995

RPI 1298

Concessão da patente

#16.1

04/27/1993

RPI 1169

Notificação para pagamento de retribuição

#13.1

03/02/1993

RPI 1161

Deferimento

#9.1

09/29/1992

RPI 1139

Solicitação de exame técnico

#4.1

03/20/1990

RPI 1010

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