Description
Class B21F : WORKING OR PROCESSING OF WIRE
Subclass 3/08: Coiling wire into particular forms to flat spiral
B21F 3/08
Sub-Class
Stats
- 3 US PATENTS IN FORCE
- 6 US APPLICATIONS PENDING
- 2 Total Patent Owners
- 28 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 10661330 | Method for producing a flat spiral spring, and bending device for producing same | Jul 31, 15 | May 26, 20 | Adolf Schnorr GmbH + Co. KG |
| 10456825 | Method for press-rolling a timepiece mainspring | Jun 06, 17 | Oct 29, 19 | Nivarox-Far SA |
| 9782819 | Spiral spring manufacturing method | Nov 20, 13 | Oct 10, 17 | SUNCALL CORPORATION |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2025/0015,683 | WINDING OVERHANG MACHINING METHOD, WINDING OVERHANG STRUCTURE, AND STATOR ASSEMBLY | Nov 29, 22 | Jan 09, 25 | Not available |
| 2024/0167,501 | PRE-TIGHTENING DISC SPRING, ASSEMBLY COMPRISING THE PRE-TIGHTENING DISC SPRING, AND METHOD FOR MANUFACTURING THE PRE-TIGHENING DISC SPRING | May 15, 23 | May 23, 24 | Not available |
| 2024/0030,792 | STACKING METHOD FOR STACKING WAVE WINDING WIRES, MAGAZINE FOR USE THEREIN AND USES THEREOF | Jul 21, 23 | Jan 25, 24 | Not available |
| 2023/0404,712 | PRE-ACTIVATED ARCH EXPANDER DESIGN METHOD, MANUFACTURING METHOD AND SYSTEM AND A PRE-ACTIVATED ARCH EXPANDER | Sep 01, 23 | Dec 21, 23 | Not available |
| 2022/0371,077 | Method of Automating Coil Height Control in a Wire Rod Plant | May 21, 21 | Nov 24, 22 | Primetals Technologies USA LLC |
| 2019/0247,912 | Heating Coil Production System | Feb 15, 18 | Aug 15, 19 | Not available |
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 22 Months (last 2 years Issuances)
- 22 Months (last 5 years Issuances)