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Official data from INPI

PROCESSO PARA A PREPARACAO DE DIHIDROXIPOLIURETANAS,COMPOSTOS OBTIDOS POR ESSE PROCESSO E APLICACAO COMO ADESIVOS OU COMO MATERIA PRIMA ADESIVA

Em AnáliseInvention Patent

Application data

Number

PI7804831

Type

Invention Patent

Filing

07/28/1977

Publication

-

Progress at the INPI

  1. Filing07/28/77
  2. Publication
  3. Examination
  4. Allowance08/16/83
  5. Grant03/27/84
  6. Terminated06/14/88

The patent was granted on 03/27/1984 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 06/14/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

BAYER AG

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Inventors

D. M. (pessoa física)

M. W. (pessoa física)

M. H. (pessoa física)

V. E. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

06/14/1988

RPI 921

Concessão da patente

#16.1

03/27/1984

RPI 701

Notificação para pagamento de retribuição

#13.1

12/06/1983

RPI 685

Deferimento

#9.1

08/16/1983

RPI 669

Exigência - art. 36 da LPI

#6.1

02/01/1983

RPI 641

6.2

11/24/1981

RPI 579

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