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Official data from INPI

PROCESSO PARA A PREPARACAO DE METILISOCIANATO

Em AnáliseInvention Patent

Application data

Number

PI7903995

Type

Invention Patent

Filing

06/25/1979

Publication

-

Progress at the INPI

  1. Filing06/25/79
  2. Publication
  3. Examination04/27/82
  4. Allowance03/01/83
  5. Grant09/27/83
  6. Terminated07/27/93

The patent was granted on 09/27/1983 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: 05/29/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Degussa Ag.

DE

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Inventors

F. W. (pessoa física)

G. G. (pessoa física)

G. K. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

05/29/1984

RPI 710

Concessão da patente

#16.1

09/27/1983

RPI 675

Notificação para pagamento de retribuição

#13.1

06/21/1983

RPI 661

Deferimento

#9.1

03/01/1983

RPI 645

Solicitação de exame técnico

#4.1

04/27/1982

RPI 601

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C07C 119/042; C07C 118/00; C07C 265/00; C07C 265/04; C07C 263/00.

03/20/2018

RPI 2463

Anuidade - prazo legal encerrado

#18.2

07/27/1993

RPI 1182

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