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Official data from INPI

PROCESSO PARA A PURIFICACAO DE CAPROLACTAMA POR DESTILACAO A VACUO E CAPROLACTAMA PURIFICADA OBTIDA

ConcedidaInvention Patent

Application data

Number

PI8001154

Type

Invention Patent

Filing

02/28/1979

Publication

-

Progress at the INPI

  1. Filing02/28/79
  2. Publication
  3. Examination11/30/82
  4. Allowance09/25/84
  5. Grant04/30/85
  6. Expired05/16/95

The letters patent expired on 05/16/1995: 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: 04/30/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

S. V. (pessoa física)

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Inventors

A. D. (pessoa física)

S. P. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/30/1985

RPI 758

Notificação para pagamento de retribuição

#13.1

01/29/1985

RPI 745

Deferimento

#9.1

09/25/1984

RPI 727

Exigência - art. 36 da LPI

#6.1

01/17/1984

RPI 691

Solicitação de exame técnico

#4.1

11/30/1982

RPI 632

Carta-patente expirada

#21.1

05/16/1995

RPI 1276

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