Hamstra Overview

  • Founded
  • 1908

  • Status
  • Acquired/​Merged

  • Employees
  • 50

  • Latest Deal Type
  • M&A

  • Financing Rounds
  • 1

Hamstra General Information


Manufacturer of insect screens. The company supplies different types of screens for use in windows, skylights and doors.

Contact Information

Ownership Status
(Operating Subsidiary)
Financing Status
Corporate Backed or Acquired
Primary Industry
Other Commercial Products
Other Industries
Other Consumer Durables
Parent Company
Primary Office
  • Ravenswade 4b
  • 3430 RA Nieuwegein
  • Netherlands
+31 030 000 0000

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Hamstra Valuation & Funding

Deal Type Date Amount Valuation/
Post-Val Status Debt

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Hamstra Patents

Hamstra Recent Patent Activity

Publication ID Patent Title Status First Filing Date Technology (CPC) Citations
EP-2010742-A1 Assembly for closing a door or window opening, and closing mechanism therefore Inactive 27-Apr-2006 000000000
DE-602005001843-D1 Mounting arrangement Active 10-Feb-2005 000000000
EP-1691085-B1 Mounting assembly Inactive 10-Feb-2005 000000000
EP-1691085-A1 Mounting assembly Active 10-Feb-2005 000000000 0
DE-60021048-T2 A roller screen Inactive 15-Dec-1999 E06B9/54
To view Hamstra’s complete patent history, request access »

Hamstra Signals

Growth Rate

0.80% Weekly
Weekly Growth 0.80%, 93rd %
-35.5%. 530%

Size Multiple

219x Median
Size Multiple 219x, 100th %ile
0.00x 0.95x. 413Kx

Key Data Points

Twitter Followers


Similarweb Unique Visitors


Majestic Referring Domains


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