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Official data from INPI

PROCESSO PARA PREPARAR SULFETO DE CARBONILA

ConcedidaInvention Patent

Application data

Number

PI8005247

Type

Invention Patent

Filing

08/19/1980

Publication

-

Progress at the INPI

  1. Filing08/19/80
  2. Publication
  3. Examination06/07/83
  4. Allowance04/16/85
  5. Grant10/01/85
  6. Expired09/26/95

The letters patent expired on 09/26/1995: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 10/01/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Ihaara Chemical Industry Co., Ltd.

JP

Inventors

K. H. (pessoa física)

M. S. (pessoa física)

N. T. (pessoa física)

S. M. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/01/1985

RPI 780

Deferimento

#9.1

04/16/1985

RPI 756

Exigência - art. 36 da LPI

#6.1

01/31/1984

RPI 693

Solicitação de exame técnico

#4.1

06/07/1983

RPI 659

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era C01B 31/26.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

09/26/1995

RPI 1295

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