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Official data from INPI

PROCESSO PARA PRODUZIR UMA ESPUMA DE RESINA TERMOPLASTICA

ConcedidaInvention Patent

Application data

Number

PI7901399

Type

Invention Patent

Filing

03/03/1978

Publication

-

Progress at the INPI

  1. Filing03/03/78
  2. Publication
  3. Examination
  4. Allowance06/14/83
  5. Grant12/27/83
  6. Terminated09/25/90

The patent was granted on 12/27/1983 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: 12/27/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

HITACHI CHEMICAL CO LTD

Inventors

N. H. (pessoa física)

S. T. (pessoa física)

T. K. (pessoa física)

W. K. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/27/1983

RPI 688

Notificação para pagamento de retribuição

#13.1

10/04/1983

RPI 676

Deferimento

#9.1

06/14/1983

RPI 660

Exigência - art. 36 da LPI

#6.1

01/25/1983

RPI 640

Exigência - art. 36 da LPI

#6.1

08/17/1982

RPI 617

Anuidade - prazo legal encerrado

#18.2

09/25/1990

RPI 1034

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